IPCDN Working Group D. Raftus
Internet Draft Terayon Canada Ltd.
Document: draft-ietf-ipcdn-docs-rfmibv2-08 October 2003
Expires: April 2004Obsoletes: RFC2670
Radio Frequency (RF) Interface Management Information Base
for DOCSIS 2.0 compliant RF interfaces
Status of this Memo
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Copyright Notice
Copyright (C) The Internet Society (2003). All Rights Reserved.
Abstract
This memo is a draft revision of the standards track RFC-2670.
Please see "Section 9 Changes from RFC2670" for a description of
modifications. This document or its successor will obsolete RFC-2670
when accepted.
This memo defines a portion of the Management Information Base (MIB)
for use with network management protocols in the Internet community.
In particular, it defines a basic set of managed objects for SNMP-
based management of DOCSIS compliant Radio Frequency (RF)
interfaces.
This memo is a product of the IPCDN working group within the
Internet Engineering Task Force. Comments are solicited and should
be addressed to the working group's mailing list at ipcdn@ietf.org
and/or the authors.
Conventions used in this document
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Internet Draft DOCSIS RF Interface MIB October 20038 Informative References ...................................... 1249 Security Considerations ..................................... 12410 Changes from RFC2670 ....................................... 12411 Conflict Resolution with docsIfExt MIB ..................... 12612 Intellectual Property .......................................12613 Author's Address ........................................... 12714 Full Copyright Statement ................................... 1271. The Internet-Standard Management Framework
For a detailed overview of the documents that describe the current
Internet-Standard Management Framework, please refer to section 7
of RFC 3410 [RFC3410].
Managed objects are accessed via a virtual information store,
termed the Management Information Base or MIB. MIB objects are
generally accessed through the Simple Network Management Protocol
(SNMP).
Objects in the MIB are defined using the mechanisms defined in the
Structure of Management Information (SMI). This memo specifies a
MIB module that is compliant to the SMIv2, which is described in
STD 58, RFC 2578 [RFC2578], STD 58, RFC 2579 [RFC2579] and STD 58,
RFC 2580 [RFC2580].
2. Glossary
The terms in this document are derived either from normal cable
system usage, or from the documents associated with the Data Over
Cable Service Interface Specification process.
2.1. CATV
Originally "Community Antenna Television", now used to refer to any
cable or hybrid fiber and cable system used to deliver video signals
to a community.
2.2. Channel
A specific frequency allocation with an RF medium, specified by
channel width in Hertz (cycles per second) and by center frequency.
Within the US Cable Systems, upstream channels are generally
allocated from the 5-42MHz range while down stream channels are
generally allocated from the 50-750MHz range depending on the
capabilities of the given system. The typical broadcast channel
width in the US is 6MHz. Upstream channel widths for DOCSIS vary.
For European cable systems, upstream channels vary by country. The
upper edge of upstream channel allocations vary between 25 MHz to 65
MHz, and the lower edge of downstream channel allocations vary
between 47 MHz and 87.5 MHz. The typical broadcast channel width in
Europe is 8MHz. The actual parameters are of concern to systems
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deploying EuroDOCSIS technology.
2.3. CM Cable Modem.
A CM acts as a "slave" station in a DOCSIS compliant cable data
system.
2.4. CMTS Cable Modem Termination System.
A generic term covering a cable bridge or cable router in a
head-end. A CMTS acts as the master station in a DOCSIS compliant
cable data system. It is the only station that transmits
downstream, and it controls the scheduling of upstream
transmissions by its associated CMs.
2.5. Codeword
A characteristic of the Forward Error Correction scheme used
above the RF media layer.
See "Data-Over-Cable Service Interface Specifications: Radio
Frequency Interface Specification SP-RFIv2.0-I04-030730"
2.6. Data Packet
The payload portion of the MAC Packet.
2.7. dBmV
A measure of RF signal voltage amplitude, whose power level is
determined by the characteristic impedance. A zero dB signal power
is equivalent to 48.75 dBmV signal amplitude in a 75 Ohm system.
2.8. DOCSIS
"Data Over Cable Service Interface Specification". A term
referring to the ITU-T J.112 Annex B standard for cable modem
systems [7].
2.8.1. DOCSIS 1.0 Cable modem systems CM/CMTS compliant to requirements in [2]2.8.2 DOCSIS 1.1 Cable modem systems CM/CMTS compliant to requirements in [3].
The term DOCSIS 1.x is used in this document to refer both
DOCSIS 1.0 and DOCSIS 1.1.
2.8.3. DOCSIS 2.0 Cable modem systems CM/CMTS compliant to requirements in [4]2.9. Downstream
The direction from the head-end towards the subscriber.
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Internet Draft DOCSIS RF Interface MIB October 20032.10. Head-end
The origination point in most cable systems of the subscriber video
signals.
2.11. MAC Packet
A DOCSIS PDU.
2.12. MCNS
"Multimedia Cable Network System". Generally replaced in usage by
DOCSIS.
2.13. Mini-slot
In general, an interval of time which is allocated by the
CMTS to a given CM for that CM to transmit in an upstream direction.
See "Data-Over-Cable Service Interface Specifications: Radio
Frequency Interface Specification SP-RFIv2.0-I04-030730",
2.14. QPSK Quadrature Phase Shift Keying.
A particular modulation scheme on an RF medium. See [6].
2.15. QAM Quadrature Amplitude Modulation.
A particular modulation scheme on RF medium. Usually expressed
with a number indicating the size of the modulation constellation
(e.g. 16 QAM). See [6], or any other book on digital communications
over RF for a complete explanation of this.
2.16. RF
Radio Frequency.
2.17. Symbol-times
A characteristic of the RF modulation scheme.
See "Data-Over-Cable Service Interface Specifications: Radio
Frequency Interface Specification SP-RFIv2.0-I04-030730"
2.18. Upstream
The direction from the subscriber towards the head-end.
3. Overview
This MIB provides a set of objects required for the management of
MCNS/DOCSIS compliant Cable Modem (CM) and Cable Modem Termination
System (CMTS) RF interfaces. The specification is derived in part
from the parameters and protocols described in "Data-Over-Cable
Service Interface Specifications: Radio Frequency Interface
Specification SP-RFIv2.0-I04-030730".
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Internet Draft DOCSIS RF Interface MIB October 20033.1. Structure of the MIB
This MIB is structured as three groups:
o Management information pertinent to both Cable Modems (CM) and
Cable Modem Termination Systems (CMTS) (docsIfBaseObjects).
o Management information pertinent to Cable Modems only
(docsIfCmObjects).
o Management information pertinent to Cable Modem Termination
Systems only (docsIfCmtsObjects).
Tables within each of these groups group objects functionally - e.g.
Quality of Service, Channel characteristics, MAC layer management,
etc. Rows created automatically (e.g. by the device according to
the hardware configuration) may and generally will have a mixture of
configuration and status objects within them. Rows that are meant
to be created by the management station are generally restricted to
configuration (read-create) objects.
3.1.1. docsIfBaseObjects
docsIfDownstreamChannelTable - This table describes the active
downstream channels for a CMTS and the received downstream channel
for a CM.
docsIfUpstreamChannelTable - This table describes the active
upstream channels for a CMTS and the current upstream transmission
channel for a CM.
docsIfQosProfileTable - This table describes the valid Quality of
Service profiles for the cable data system.
docsIfSignalQualityTable - This table is used to monitor RF signal
quality characteristics of received signals.
docsIfDocsisBaseCapability - This object is used to indicate the
highest level of DOCSIS version a cable device can support.
3.1.2. docsIfCmObjects
docsIfCmMacTable - This table is used to monitor the DOCSIS MAC
interface and can be considered an extension to the ifEntry.
docsIfCmStatusTable - This table maintains a number of status
objects and counters for cable modems. There is a comparable table
at the CMTS, docsIfCmtsCmStatusTable, which maintains similar
counters from the CMTS point of view.
docsIfCmServiceTable - This table describes the upstream service
queues available at this CM. There is a comparable table at the
CMTS, docsIfCmtsServiceEntry, which describes the service queues
from the point of view of the CMTS.
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Internet Draft DOCSIS RF Interface MIB October 20033.1.3. docsIfCmtsObjects
docsIfCmtsMacTable - Describes the attributes of each CMTS MAC
interface.
docsIfCmtsStatusTable - This table provides a set of aggregated
counters which roll-up values and events that occur on the
underlying sub-interfaces.
docsIfCmtsCmStatusTable - This table is used to hold information
about known (i.e. ranging, registered, and/or previously online)
cable modems on the system serviced by this CMTS.
docsIfCmtsServiceTable - This table provides access to the
information related to upstream service queues.
docsIfCmtsModulationTable - This table allows control over the
modulation profiles for RF channels associated with this CMTS.
docsIfCmtsMacToCmTable - This table allows fast access into the
docsIfCmtsCmTable via a MAC address (of the CM) interface.
docsIfCmtsChannelUtilizationTable - This table provides statistical
load usage data for attached upstream and downstream physical
channels.
docsIfCmtsDownChannelCounterTable - This table provides statistical
data for attached downstream channels, appropriate as input for load
usage calculations.
docsIfCmtsUpChannelCounterTable - This table provides statistical
data for attached upstream channels, appropriate as input for load
usage calculations.
3.2. Relationship to the Interfaces MIB
This section clarifies the relationship of this MIB to the
Interfaces MIB [RFC2863]. Several areas of correlation are addressed
in the following subsections. The implementer is referred to the
Interfaces MIB document in order to understand the general intent of
these areas.
3.2.1. Layering Model
An instance of ifEntry exists for each RF Downstream interface, for
each RF Upstream interface, for each Upstream logical Channel and
for each RF MAC layer.
The ifStackTable [RFC2863] MUST be implemented to identify
relationships among sub-interfaces.
The following example illustrates a CMTS MAC interface with one
downstream and two upstream interfaces.
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cable upstream channels can use the above model without
modification.
Telco Return Upstream channel(s) are handled by the appropriate
MIBs, such as PPP or Modem MIBs.
3.2.2. Virtual Circuits
This medium does not support virtual circuits and this area is not
applicable to this MIB.
3.2.3. ifTestTable
The ifTestTable is optional for Docsis CM/CMTS implementations, but
is not specifically influenced by the RF mib.
3.2.4. ifRcvAddressTable
The ifRcvAddressTable is optional for Docsis CM/CMTS
implementations, but is not specifically influenced by the RF mib.
3.2.5. ifEntry
This section documents only the differences from the requirements
specified in the Interfaces MIB. See that MIB for columns omitted
from the descriptions below.
3.2.5.1. ifEntry for Downstream interfaces
The ifEntry for Downstream interfaces supports the
ifGeneralInformationGroup and the ifPacketGroup of the Interfaces
MIB. This is an output only interface at the CMTS and all input
status counters - ifIn* - will return zero. This is an input only
interface at the CM and all output status counters - ifOut* - will
return zero.
3.2.5.1.1. ifEntry for Downstream interfaces in Cable Modem Termination Systems
ifTable Comments
============== ===========================================
ifIndex Each RF Cable Downstream interface is represented
by an ifEntry.
ifType The IANA value of docsCableDownstream(128).
ifSpeed Return the speed of this downstream channel.
The returned value is the raw bandwidth in bits/s
of this interface. This is the symbol rate
multiplied with the number of bits per symbol.
ifHighSpeed Return the speed of this downstream channel.
The returned value is the raw bandwidth in
megabits/s of this interface. This is the symbol
rate multiplied with the number of bits per
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symbol.
ifPhysAddress Return an empty string.
ifAdminStatus The administrative status of this interface.
ifOperStatus The current operational status of this interface.
ifMtu The size of the largest frame which can be
sent on this interface, specified in octets.
The value includes the length of the MAC header.
ifInOctets Return zero.
ifHCInOctets
ifInUcastPkts Return zero.
ifHCInUcastPkts
ifInMulticastPkts Return zero.
ifHCInMulticastPkts
ifInBroadcastPkts Return zero.
ifHCInBroadcastPkts
ifInDiscards Return zero.
ifInErrors Return zero.
ifInUnknownProtos Return zero.
ifOutOctets The total number of octets transmitted on this
ifHCOutOctets interface. This includes MAC packets as well as
data packets, and includes the length of the MAC
header.
ifOutUcastPkts The number of Unicast packets transmitted on this
ifHCOutUcastPkts interface. This includes MAC packets as well as
data packets.
ifOutMulticastPkts
ifHCOutMulticastPkts
Return the number of Multicast packets transmitted
on this interface.
This includes MAC packets as well as data packets.
ifOutBroadcastPkts
ifHCOutBroadcastPkts
Return the number of broadcast packets transmitted
on this interface.
This includes MAC packets as well as data packets.
ifOutDiscards The total number of outbound packets which
were discarded. Possible reasons are:
buffer shortage.
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ifOutErrors The number of packets which could not be
transmitted due to errors.
ifPromiscuousMode Return false.
3.2.5.1.2. ifEntry for Downstream interfaces in Cable Modems
ifTable Comments
============== ===========================================
ifIndex Each RF Cable Downstream interface is represented
by an ifEntry.
ifType The IANA value of docsCableDownstream(128).
ifSpeed Return the speed of this downstream channel.
The returned value the raw bandwidth in bits/s
of this interface. This is the symbol rate
multiplied with the number of bits per symbol.
ifHighSpeed Return the speed of this downstream channel.
The returned value the raw bandwidth in megabits/s
of this interface. This is the symbol rate
multiplied with the number of bits per symbol.
ifPhysAddress Return an empty string.
ifAdminStatus The administrative status of this interface.
ifOperStatus The current operational status of this interface.
ifMtu The size of the largest frame which can be
received from this interface, specified in octets.
The value includes the length of the MAC header.
ifInOctets The total number of octets received on this
ifHCInOctets interface. This includes data packets as well as
MAC packets, and includes the length of the
MAC header.
ifInUcastPkts The number of Unicast packets received on this
ifHCInUcastPkts interface. This includes data packets as well as
MAC packets.
ifInMulticastPkts
ifHCInMulticastPkts
Return the number of Multicast packets received
on this interface. This includes data packets as
well as MAC packets.
ifInBroadcastPkts
ifHCInBroadcastPkts
Return the number of Broadcast packets received
on this interface. This includes data packets
as well as MAC packets.
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ifInDiscards The total number of received packets that have
been discarded.
The possible reasons are: buffer shortage.
ifInErrors The number of inbound packets that contained
errors preventing them from being deliverable
to higher layers.
Possible reasons are: MAC FCS error.
ifInUnknownProtos The number of frames with an unknown packet type.
These are MAC frames with an unknown packet type.
ifOutOctets Return zero.
ifHCOutOctets
ifOutUcastPkts Return zero.
ifHCOutUcastPkts
ifOutMulticastPkts
ifHCOutMulticastPkts
Return zero.
ifOutBroadcastPkts
ifHCOutBroadcastPkts
Return zero.
ifOutDiscards Return zero.
ifOutErrors Return zero.
ifPromiscuousMode Refer to the Interfaces MIB.
3.2.5.2. ifEntry for Upstream interfaces
Each supported interface of the type docsCableUpstream(129) must
have a corresponding ifEntry.
The ifEntry for Upstream interfaces supports the
ifGeneralInformationGroup and the ifPacketGroup of the Interfaces
MIB. This is an input only interface at the CMTS and all output
status counters - ifOut* - will return zero. This is an output only
interface at the CM and all input status counters - ifIn* - will
return zero.
3.2.5.2.1. ifEntry for Upstream interfaces in Cable Modem Termination Systems
ifTable Comments
============== ===========================================
ifIndex Each RF Cable Upstream interface is represented
by an ifEntry.
ifType The IANA value of docsCableUpstream (129).
ifSpeed Return the maximum channel throughput (not payload
throughput) supported by the interface.
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The maximum throughput is calculated for the case
where upstream channels are configured to maximize
interface throughput.
ifHighSpeed Return the maximum channel throughput (not payload
throughput) supported by the interface.
The maximum throughput is calculated for the case
where upstream channels are configured to maximize
interface throughput. Units for this object are
(1/1 000 000) * IfSpeed.
ifPhysAddress Return an empty string.
ifAdminStatus The administrative status of this interface.
This reflect the total status of all the channels
under this interface. So if at least one channel
has a physical connection this interface has
connection. Any SNMP SET on this interface will
cause a SET to all the channels under this
interface.
ifOperStatus The current operational status of this interface.
This reflects the total status of all the channels
under this interface. So if at least one channel
has a physical connection this interface has
connection.
ifMtu The size of the largest frame which can be
transmitted on this interface, specified in
octets. The value includes the length of the MAC
header. This is the maximum of all the ifMtu of
all the channels under this interface.
ifInOctets
ifHCInOctets The total (sum) number of octets received on all
the Upstream channels under this
interface. This includes data packets as well as
MAC packets, and includes the length of the
MAC header.
ifInUcastPkts
ifHCInUcastPkts The total number of Unicast packets received on
all the upstream channels under this
interface. This includes data packets as well as
MAC packets.
ifInMulticastPkts
ifHCInMulticastPkts
Return the total number of Multicast packets
received on all the Upstream channels under this
interface. This includes data packets as well as
MAC layer packets.
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ifInBroadcastPkts
ifHCInBroadcastPkts
Return the total number of Broadcast packets
received on all the Upstream channels under this
interface. This includes data packets as well as
MAC packets.
ifInDiscards The total number of received packets, which have
been discarded on all the Upstream channels under
this interface.
The possible reasons are: buffer shortage.
ifInErrors The total number of inbound packets that contained
errors preventing them from being deliverable
to higher layers.
Possible reasons are: MAC FCS error.
ifInUnknownProtos The total number of frames with an unknown packet
type. These are MAC frames with an unknown packet
type.
ifOutOctets Return zero.
ifHCOutOctets
ifOutUcastPkts Return zero.
ifHCOutOctets
ifOutMulticastPkts
ifHCOutMulticastPkts
Return zero.
ifOutBroadcastPkts
ifHCOutBroadcastPkts
Return zero.
ifOutDiscards Return zero.
ifOutErrors Return zero.
3.2.5.2.2. ifEntry for Upstream interfaces in Cable Modems
ifTable Comments
============== ===========================================
ifIndex Each RF Cable Upstream interface is represented
by an ifEntry.
ifType The IANA value of docsCableUpstream (129).
ifSpeed Return the speed of this upstream interface.
The returned value is the raw bandwidth
in bits/s of this interface.
ifHighSpeed Return the speed of this upstream interface.
The returned value is the raw bandwidth
in megabits/s of this interface.
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ifPhysAddress Return an empty string.
ifAdminStatus The administrative status of this interface.
ifOperStatus The current operational status of this interface.
ifMtu The size of the largest frame which can be
transmitted on this interface, specified in
octets. The value includes the length of the MAC
header.
ifInOctets Return zero.
ifHCInOctets
ifInUcastPkts Return zero.
ifHCInUcastPkts
ifInMulticastPkts Return zero.
ifHCInMulticastPkts
ifInBroadcastPkts Return zero.
ifHCInBroadcastPkts
ifInDiscards Return zero.
ifInErrors Return zero.
ifInUnknownProtos Return zero.
ifOutOctets The total number of octets transmitted on this
ifHCOutOctets interface. This includes MAC packets as well as
data packets, and includes the length of the MAC
header.
ifOutUcastPkts The number of Unicast packets transmitted on this
ifHCOutUcastPkts interface. This includes MAC packets as well as
data packets.
ifOutMulticastPkts
ifHCOutMulticastPkts
Return the number of Multicast packets transmitted
on this interface.
This includes MAC packets as well as data packets.
ifOutBroadcastPkts
ifHCOutBroadcastPkts
Return the number of broadcast packets transmitted
on this interface.
This includes MAC packets as well as data packets.
ifOutDiscards The total number of outbound packets which
were discarded. Possible reasons are:
buffer shortage.
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ifOutErrors The number of packets which could not be
transmitted due to errors.
ifPromiscuousMode Return false.
3.2.5.3. ifEntry for Upstream channels
Each supported channel of the type docsCableUpstreamChannel(205)
must have a corresponding ifEntry.
The ifEntry for Upstream channels supports the
ifGeneralInformationGroup and the ifPacketGroup of the Interfaces
MIB. This is an input only interface at the CMTS and all output
status counters - ifOut* - will return zero. At the time of this mib
creation, DOCSIS CMs are not required to support logical upstream
channels.
3.2.5.3.1. ifEntry for Upstream Channels in Cable Modem Termination Systems
ifTable Comments
============== ===========================================
ifIndex Each RF Cable Upstream channel is represented
by an ifEntry.
ifType The IANA value of docsCableUpstreamChannel (205).
ifSpeed Return the speed of this upstream channel.
The returned value is the raw bandwidth
in bits/s of this channel.
ifHighSpeed Return the speed of this upstream channel.
The returned value is the raw bandwidth
in megabits/s of this channel.
ifPhysAddress Return an empty string.
ifAdminStatus The administrative status of this interface.
ifOperStatus The current operational status of this interface.
ifMtu The size of the largest frame which can be
received on this interface, specified in octets.
The value includes the length of the MAC header.
ifInOctets The total number of octets received on this
interface. This includes data packets as well as
MAC packets, and includes the length of the
MAC header.
ifInUcastPkts The number of Unicast packets received on this
ifHCInUcastPkts interface. This includes data packets as well as
MAC packets.
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ifInMulticastPkts
ifHCInMulticastPkts
Return the number of Multicast packets received
on this interface. This includes data packets as
well as MAC layer packets.
ifInBroadcastPkts
ifHCInBroadcastPkts
Return the number of Broadcast packets received
on this interface. This includes data packets
as well as MAC packets.
ifInDiscards The total number of received packets that have
been discarded.
The possible reasons are: buffer shortage.
ifInErrors The number of inbound packets that contained
errors preventing them from being deliverable
to higher layers.
Possible reasons are: MAC FCS error.
ifInUnknownProtos The number of frames with an unknown packet type.
These are MAC frames with an unknown packet type.
ifOutOctets Return zero.
ifHCOutOctets
ifOutUcastPkts Return zero.
ifHCOutUcastPkts
ifOutMulticastPkts
ifHCOutMulticastPkts
Return zero.
ifOutBroadcastPkts
ifHCOutBroadcastPkts
Return zero.
ifOutDiscards Return zero.
ifOutErrors Return zero.
3.2.5.4. ifEntry for the MAC Layer
The ifEntry for the MAC Layer supports the ifGeneralInformationGroup
and the ifPacketGroup of the Interfaces MIB. This interface
provides an aggregate view of status for the lower level Downstream
and Upstream interfaces.
ifTable Comments
============== ===========================================
ifIndex Each RF Cable MAC layer entity is represented
by an ifEntry.
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ifType The IANA value of docsCableMaclayer(127).
ifSpeed Return zero.
ifPhysAddress Return the physical address of this interface.
ifAdminStatus The administrative status of this interface.
ifOperStatus The current operational status of the MAC
layer interface.
ifHighSpeed Return zero.
ifMtu Return 1500.
ifInOctets The total number of data octets received on this
ifHCInOctets interface, targeted for upper protocol layers.
ifInUcastPkts The number of Unicast packets received on this
ifHCInUcastPkts interface, targeted for upper protocol layers.
ifInMulticastPkts
ifHCInMulticastPkts
Return the number of Multicast packets received
on this interface, targeted for upper protocol
layers.
ifInBroadcastPkts
ifHCInBroadcastPkts
Return the number of Broadcast packets received
on this interface, targeted for upper protocol
layers.
ifInDiscards The total number of received packets that have
been discarded.
The possible reasons are: buffer shortage.
ifInErrors The number of inbound packets that contained
errors preventing them from being deliverable
to higher layers.
Possible reasons are: data packet FCS error,
invalid MAC header.
ifInUnknownProtos The number of frames with an unknown packet type.
This is the number of data packets targeted for
upper protocol layers with an unknown packet type.
ifOutOctets The total number of octets, received from upper
ifHCOutOctets protocol layers and transmitted on this interface.
ifOutUcastPkts The number of Unicast packets, received from upper
ifHCOutUcastPkts protocol layers and transmitted on this interface.
ifOutMulticastPkts
ifHCOutMulticastPkts
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Return the number of Multicast packets received
from upper protocol layers and transmitted on this
interface.
ifOutBroadcastPkts
ifHCOutBroadcastPkts
Return the number of broadcast packets received
from upper protocol layers and transmitted on this
interface.
ifOutDiscards The total number of outbound packets which
were discarded. Possible reasons are:
buffer shortage.
ifOutErrors The number of packets which could not be
transmitted due to errors.
ifPromiscuousMode Refer to the Interfaces MIB.
4. Definitions
DOCS-IF-MIB DEFINITIONS ::= BEGIN
IMPORTS
MODULE-IDENTITY,
OBJECT-TYPE,
-- do not import BITS,
Unsigned32,
Integer32,
Counter32,
Counter64,
TimeTicks,
IpAddress,
transmission
FROM SNMPv2-SMI
TEXTUAL-CONVENTION,
MacAddress,
RowStatus,
TruthValue,
TimeInterval,
TimeStamp
FROM SNMPv2-TC
OBJECT-GROUP,
MODULE-COMPLIANCE
FROM SNMPv2-CONF
ifIndex, InterfaceIndexOrZero
FROM IF-MIB
InetAddressType,
InetAddress
FROM INET-ADDRESS-MIB
IANAifType
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docsIfCmtsModPreambleType and docsIfCmtsCmStatusValue, to
to add new object to indicate the last update time of
docsIfCmtsCmStatusValueLastUpdate, to update references to
the latest Docsis versions.
pre-RFC draft v6:
Modified by David Raftus to update references, boilerplate
to format suggested by IPCDN workgroup. Also clarified
descriptions of some objects, added size constraints to
selected objects to fix compiler warnings.
pre-RFC draft v5:
Modified by David Raftus to add channel utilization
related objects, upstream channel equalization related
objects, a cmts upstream minislot counter table, a cmts
downstream byte counter table, 64 bit versions of existing
32 bit docsIfSigQTable objects, and perform some editorial
adjustments.
pre-RFC draft v4:
Modified by David Raftus to fix docsIfUpChannelWidth range
in compliance statements to accommodate 6.4Mhz channel at
5.12 Msymbol/sec. Also adjusted description of
docsIfUpChannelStatus to use correct rowStatus
terminology.
pre-RFC draft v3:
Modified by David Raftus to add new textual convention
describing upstream modulation status. Also clarified
some object descriptions, fixed error in
docsIfSignalQualityEntry, fixed upstreamTable compliance
statements.
pre-RFC draft v2:
Modified by David Raftus to add capability to adjust
and verify upstream channel parameters as a group.
Also adjusted syntax and clarified descriptions of
selected objects.
pre-RFC draft v1:
Modified by Aviv Goren and David Raftus to accommodate
Docsis 2.0 Advanced Phy capabilities, as well as to
incorporate objects from the docsIfExt mib.
Modified by Rich Woundy to use IPv6-friendly
address objects, to accommodate EuroDOCSIS, and
to correct the SYNTAX of various objects."
REVISION "199908190000Z"
DESCRIPTION
"Initial Version, published as RFC 2670.
Modified by Mike StJohns to fix problems identified by
the first pass of the MIB doctor. Of special note,
docsIfRangingResp and docsIfCmtsInsertionInterval were
obsoleted and replaced by other objects with the same
functionality, but more appropriate SYNTAX."
::= { transmission 127 }
-- Textual Conventions
TenthdBmV ::= TEXTUAL-CONVENTION
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docsIfDownChannelId OBJECT-TYPE
SYNTAX Integer32 (0..255)
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The Cable Modem Termination System (CMTS) identification
of the downstream channel within this particular MAC
interface. If the interface is down, the object returns
the most current value. If the downstream channel ID is
unknown, this object returns a value of 0."
::= { docsIfDownstreamChannelEntry 1 }
docsIfDownChannelFrequency OBJECT-TYPE
SYNTAX Integer32 (0..1000000000)
UNITS "hertz"
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"The center of the downstream frequency associated with
this channel. This object will return the current tuner
frequency. If a CMTS provides IF output, this object
will return 0, unless this CMTS is in control of the
final downstream RF frequency. See the associated
compliance object for a description of valid frequencies
that may be written to this object."
REFERENCE
"Data-Over-Cable Service Interface Specifications: Radio
Frequency Interface Specification SP-RFIv2.0-I04-030730,
Tables 4-1, 6-14."
::= { docsIfDownstreamChannelEntry 2 }
docsIfDownChannelWidth OBJECT-TYPE
SYNTAX Integer32 (0..16000000)
UNITS "hertz"
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"The bandwidth of this downstream channel. Most
implementations are expected to support a channel width
of 6 MHz (North America) and/or 8 MHz (Europe). See the
associated compliance object for a description of the
valid channel widths for this object."
REFERENCE
"Data-Over-Cable Service Interface Specifications: Radio
Frequency Interface Specification SP-RFIv2.0-I04-030730,
Table 6-14."
::= { docsIfDownstreamChannelEntry 3 }
docsIfDownChannelModulation OBJECT-TYPE
SYNTAX INTEGER {
unknown(1),
other(2),
qam64(3),
qam256(4)
}
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the configured value (CMTS), the most current value (CM),
or the value of unknown(1).
The value of other(2) is returned if the interleave
is known but not defined in the above list.
See the associated conformance object for write
conditions and limitations. See the reference for the FEC
configuration described by the setting of this object."
REFERENCE
"Data-Over-Cable Service Interface Specifications: Radio
Frequency Interface Specification SP-RFIv2.0-I04-030730,
Table 6-13."
::= { docsIfDownstreamChannelEntry 5 }
docsIfDownChannelPower OBJECT-TYPE
SYNTAX TenthdBmV
UNITS "dBmV"
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"At the CMTS, the operational transmit power. At the CM,
the received power level.
If the interface is down, this object either returns
the configured value (CMTS), the most current value (CM)
or the value of 0. See the associated conformance object
for write conditions and limitations. See the reference
for recommended and required power levels."
REFERENCE
"Data-Over-Cable Service Interface Specifications: Radio
Frequency Interface Specification SP-RFIv2.0-I04-030730,
Table 6-15."
::= { docsIfDownstreamChannelEntry 6 }
docsIfDownChannelAnnex OBJECT-TYPE
SYNTAX INTEGER {
unknown(1),
other(2),
annexA(3),
annexB(4),
annexC(5)
}
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The value of this object indicates the conformance of
the implementation to important regional cable standards.
annexA : Annex A from ITU-J83 is used.
annexB : Annex B from ITU-J83 is used.
annexC : Annex C from ITU-J83 is used.
AnnexB is used for DOCSIS implementations"
REFERENCE
"Document Adapted MIB-definitions and a clarification for
MPEG-related issues for EuroDOCSIS cable modem systems
v1.01, tComLabs, May 2000, Section 2.2"
::= { docsIfDownstreamChannelEntry 7 }
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STATUS current
DESCRIPTION
"The CMTS identification of the upstream channel."
::= { docsIfUpstreamChannelEntry 1 }
docsIfUpChannelFrequency OBJECT-TYPE
SYNTAX Integer32 (0..1000000000)
UNITS "hertz"
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"The center of the frequency band associated with this
upstream interface. This object returns 0 if the frequency
is undefined or unknown. Minimum permitted upstream
frequency is 5,000,000 Hz for current technology. See
the associated conformance object for write conditions
and limitations."
REFERENCE
"Data-Over-Cable Service Interface Specifications: Radio
Frequency Interface Specification SP-RFIv2.0-I04-030730,
Table 4-2."
::= { docsIfUpstreamChannelEntry 2 }
docsIfUpChannelWidth OBJECT-TYPE
SYNTAX Integer32 (0..64000000)
UNITS "hertz"
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"The bandwidth of this upstream interface. This object
returns 0 if the interface width is undefined or unknown.
Minimum permitted interface width is 200,000 Hz currently.
See the associated conformance object for write conditions
and limitations."
REFERENCE
"Data-Over-Cable Service Interface Specifications: Radio
Frequency Interface Specification SP-RFIv2.0-I04-030730,
Table 6-12."
::= { docsIfUpstreamChannelEntry 3 }
docsIfUpChannelModulationProfile OBJECT-TYPE
SYNTAX Unsigned32
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"An entry identical to the docsIfModIndex in the
docsIfCmtsModulationTable that describes this channel.
This channel is further instantiated there by a grouping
of interval usage codes (IUCs)which together fully describe
the channel modulation. This object returns 0 if the
docsIfCmtsModulationTable entry does not exist or is empty.
See the associated conformance object for write conditions
and limitations.
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Setting this object returns a genErr error if the
following conditions are not satisfied:
1. All the IUC entries in the selected modulation profile
MUST have the same value of docsIfCmtsModChannelType.
2. All of the Modulation parameters in the selected
modulation profile MUST be consistent with the other
parameters in this docsIfUpstreamChannelEntry."
REFERENCE
"Data-Over-Cable Service Interface Specifications: Radio
Frequency Interface Specification SP-RFIv2.0-I04-030730,
Table 8-19."
::= { docsIfUpstreamChannelEntry 4 }
docsIfUpChannelSlotSize OBJECT-TYPE
SYNTAX Unsigned32
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"Applicable to TDMA and ATDMA channel types only.
The number of 6.25 microsecond ticks in each upstream
mini-slot. Returns zero if the value is undefined, unknown
or in case of an SCDMA channel.
See the associated conformance object for write
conditions and limitations. "
REFERENCE
"Data-Over-Cable Service Interface Specifications: Radio
Frequency Interface Specification SP-RFIv2.0-I04-030730,
Section 8.1.2.4."
::= { docsIfUpstreamChannelEntry 5 }
docsIfUpChannelTxTimingOffset OBJECT-TYPE
SYNTAX Unsigned32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"At the CM, a measure of the current round trip time
obtained from the ranging offset (initial ranging offset +
ranging offset adjustments).
At the CMTS, the maximum of timing offset, among all the
CMs that are/were present on the channel, taking into
account all ( initial + periodic ) timing offset
corrections that were sent for each of the CMs. Generally,
these measurements are positive, but if the measurements
are negative, the value of this object is zero. Used for
timing of CM upstream transmissions to ensure synchronized
arrivals at the CMTS.
Units are in terms of (6.25 microseconds/64)."
REFERENCE
"Data-Over-Cable Service Interface Specifications: Radio
Frequency Interface Specification SP-RFIv2.0-I04-030730,
Section 6.2.18."
::= { docsIfUpstreamChannelEntry 6 }
docsIfUpChannelRangingBackoffStart OBJECT-TYPE
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SYNTAX Integer32 (0..16)
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"The initial random backoff window to use when retrying
Ranging Requests. Expressed as a power of 2. A value of 16
at the CMTS indicates that a proprietary adaptive retry
mechanism is to be used. See the associated conformance
object for write conditions and limitations."
REFERENCE
"Data-Over-Cable Service Interface Specifications: Radio
Frequency Interface Specification SP-RFIv2.0-I04-030730,
Section 8.3.4."
::= { docsIfUpstreamChannelEntry 7 }
docsIfUpChannelRangingBackoffEnd OBJECT-TYPE
SYNTAX Integer32 (0..16)
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"The final random backoff window to use when retrying
Ranging Requests. Expressed as a power of 2. A value of 16
at the CMTS indicates that a proprietary adaptive retry
mechanism is to be used. See the associated conformance
object for write conditions and limitations."
REFERENCE
"Data-Over-Cable Service Interface Specifications: Radio
Frequency Interface Specification SP-RFIv2.0-I04-030730,
Section 8.3.4."
::= { docsIfUpstreamChannelEntry 8 }
docsIfUpChannelTxBackoffStart OBJECT-TYPE
SYNTAX Integer32 (0..16)
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"The initial random backoff window to use when retrying
transmissions. Expressed as a power of 2. A value of 16
at the CMTS indicates that a proprietary adaptive retry
mechanism is to be used. See the associated conformance
object for write conditions and limitations."
REFERENCE
"Data-Over-Cable Service Interface Specifications: Radio
Frequency Interface Specification SP-RFIv2.0-I04-030730,
Section 8.3.4."
::= { docsIfUpstreamChannelEntry 9 }
docsIfUpChannelTxBackoffEnd OBJECT-TYPE
SYNTAX Integer32 (0..16)
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"The final random backoff window to use when retrying
transmissions. Expressed as a power of 2. A value of 16
at the CMTS indicates that a proprietary adaptive retry
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docsIfUpChannelPreEqEnable for this row are populated with
the corresponding values from the row referenced by this
object. Setting this object to a non-existent or temporary
upstream returns an error wrongValue.
This object MUST contain a value of zero for physical
upstream rows."
::= { docsIfUpstreamChannelEntry 16 }
docsIfUpChannelUpdate OBJECT-TYPE
SYNTAX TruthValue
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"Used to perform the transfer of adjusted SCDMA parameters
from the temporary upstream row to the active upstream row
indicated by the docsIfUpChannelCloneFrom object. The
transfer is initiated through an SNMP SET of TRUE to this
object. The SNMP SET will fail with a GEN_ERROR (snmpv1)
or COMMIT_FAILED_ERROR (snmpv2c/v3) if the adjusted
SCDMA parameter values are not compatible with each other.
Although this object was created to facilitate SCDMA
parameter adjustment, it may also be used at the vendor's
discretion for non-SCDMA parameter adjustment.
An SNMP GET of this object always returns FALSE."
::= { docsIfUpstreamChannelEntry 17 }
docsIfUpChannelStatus OBJECT-TYPE
SYNTAX RowStatus
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"This object is generally intended to be used for the
creation of a temporary upstream row for the purpose
of adjusting channel parameters of a physical upstream
channel row.
The following restrictions apply to this object:
1. Entries with this object set to active(1) are
logically linked to a defined physical interface in
the interface MIB RFC 2863, no temporarily created to
clone parameters.
2. A status transition from active(1) to notInService(2)
or destroy(6) is not permitted.
3. ifAdminStatus from the Interface MIB RFC 2863 should be
used to take an Upstream Channel offline.
4. Temporary inactive rows must be created using
createAndWait(5).
5. The only possible status change of a row created using
createAndWait(5) (ie notInService(2)) or notReady(3) is
to destroy(6).
6. Temporary created rows must never be given the status
active(1).
A Mandatory procedure for adjusting an specific physical
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Upstream channel is:
1. Create a temporary row through an SNMP SET using
createAndWait(5). Use an ifIndex value outside the
operational range of the system.
2. Set the docsIfUpChannelCloneFrom field to the ifIndex
value of the physical row whose parameters require
adjustment.
3. Adjust the parameter values using the new temporary
row. Ensure all parameters contain desired values
before proceeding to step 4.
4. Update the physical row by setting the object
docsIfUpChannelUpdate to true(1). This operation fails
with error genErr if the adjusted parameters are not
compatible with each other.
5. Delete the temporary row through an SNMP SET using
DELETE."
::= { docsIfUpstreamChannelEntry 18 }
docsIfUpChannelPreEqEnable OBJECT-TYPE
SYNTAX TruthValue
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"At the CMTS, used to enable or disable pre-equalization on
the upstream channel represented by this table instance.
At the CM, this object is read-only and reflects the
status of pre-equalization as represented in the RNG-RSP.
Pre-equalization is considered enabled at the CM if a
RNG-RSP with pre-equalization data has been received at
least once since the last mac reinit."
DEFVAL {false}
::= { docsIfUpstreamChannelEntry 19 }
-- The following table describes the attributes of each class of
-- service. The entries in this table are referenced from the
-- docsIfServiceEntries. They exist as a separate table in order to
-- reduce redundant information in docsIfServiceTable.
--
-- This table is implemented at both the CM and the CMTS.
-- The CM need only maintain entries for the classes of service
-- referenced by its docsIfServiceTable.
--
docsIfQosProfileTable OBJECT-TYPE
SYNTAX SEQUENCE OF DocsIfQosProfileEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"Describes the attributes for each class of service."
::= { docsIfBaseObjects 3 }
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docsIfQosProfileEntry OBJECT-TYPE
SYNTAX DocsIfQosProfileEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"Describes the attributes for a single class of service.
If implemented as read-create in the Cable Modem
Termination System, creation of entries in this table is
controlled by the value of
docsIfCmtsQosProfilePermissions.
If implemented as read-only, entries are created based
on information in REG-REQ MAC messages received from
Cable Modems (Cable Modem Termination System
implementation), or based on information extracted from
the TFTP option file (Cable Modem implementation).
In the Cable Modem Termination system, read-only entries
are removed if no longer referenced by
docsIfCmtsServiceTable.
An entry in this table must not be removed while it is
referenced by an entry in docsIfCmServiceTable (Cable
Modem) or docsIfCmtsServiceTable (Cable Modem Termination
System).
An entry in this table should not be changeable while
it is referenced by an entry in docsIfCmtsServiceTable.
If this table is created automatically, there should only
be a single entry for each Class of Service. Multiple
entries with the same Class of Service parameters are not
recommended."
INDEX { docsIfQosProfIndex }
::= { docsIfQosProfileTable 1 }
DocsIfQosProfileEntry ::= SEQUENCE {
docsIfQosProfIndex Integer32,
docsIfQosProfPriority Integer32,
docsIfQosProfMaxUpBandwidth Integer32,
docsIfQosProfGuarUpBandwidth Integer32,
docsIfQosProfMaxDownBandwidth Integer32,
docsIfQosProfMaxTxBurst Integer32, -- Deprecated
docsIfQosProfBaselinePrivacy TruthValue,
docsIfQosProfStatus RowStatus,
docsIfQosProfMaxTransmitBurst Integer32
}
docsIfQosProfIndex OBJECT-TYPE
SYNTAX Integer32 (1..16383)
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"The index value that uniquely identifies an entry
in the docsIfQosProfileTable."
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DESCRIPTION
"The maximum downstream bandwidth, in bits per second,
allowed for a service with this service class.
Zero if there is no restriction of downstream bandwidth.
MUST NOT be changed while this row is active."
REFERENCE
"Data-Over-Cable Service Interface Specifications: Radio
Frequency Interface Specification SP-RFIv2.0-I04-030730,
Appendix C.1.1.4."
DEFVAL { 0 }
::= { docsIfQosProfileEntry 5 }
docsIfQosProfMaxTxBurst OBJECT-TYPE
SYNTAX Integer32 (0..255)
MAX-ACCESS read-create
STATUS deprecated
DESCRIPTION
"The maximum number of mini-slots that may be requested
for a single upstream transmission.
A value of zero means there is no limit.
MUST NOT be changed while this row is active.
This object has been deprecated and replaced by
docsIfQosProfMaxTransmitBurst, to fix a mismatch
of the units and value range with respect to the DOCSIS
Maximum Upstream Channel Transmit Burst Configuration
Setting."
REFERENCE
"Data-Over-Cable Service Interface Specifications: Radio
Frequency Interface Specification SP-RFIv2.0-I04-030730,
C.1.1.4."
DEFVAL { 0 }
::= { docsIfQosProfileEntry 6 }
docsIfQosProfBaselinePrivacy OBJECT-TYPE
SYNTAX TruthValue
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"Indicates whether Baseline Privacy is enabled for this
service class.
MUST NOT be changed while this row is active."
DEFVAL { false }
::= { docsIfQosProfileEntry 7 }
docsIfQosProfStatus OBJECT-TYPE
SYNTAX RowStatus
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"This is object is to used to create or delete rows in
this table. This object MUST NOT be changed from active
while the row is referenced by the any entry in either
docsIfCmServiceTable (on the CM), or the
docsIfCmtsServiceTable (on the CMTS)."
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::= { docsIfQosProfileEntry 8 }
docsIfQosProfMaxTransmitBurst OBJECT-TYPE
SYNTAX Integer32 (0..65535)
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"The maximum number of bytes that may be requested for a
single upstream transmission. A value of zero means there
is no limit. Note: This value does not include any
physical layer overhead.
MUST NOT be changed while this row is active."
REFERENCE
"Data-Over-Cable Service Interface Specifications: Radio
Frequency Interface Specification SP-RFIv2.0-I04-030730,
Appendix C.1.1.4."
DEFVAL { 0 }
::= { docsIfQosProfileEntry 9 }
docsIfSignalQualityTable OBJECT-TYPE
SYNTAX SEQUENCE OF DocsIfSignalQualityEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"At the CM, describes the PHY signal quality of downstream
channels. At the CMTS, describes the PHY signal quality of
upstream channels. At the CMTS, this table may exclude
contention intervals."
::= { docsIfBaseObjects 4 }
docsIfSignalQualityEntry OBJECT-TYPE
SYNTAX DocsIfSignalQualityEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"At the CM, describes the PHY characteristics of a
downstream channel. At the CMTS, describes the PHY signal
quality of an upstream channel.
An entry in this table exists for each ifEntry with an
ifType of docsCableDownstream(128) for Cable Modems.
For Docsis 1.1 Cable Modem Termination Systems, an entry
exists for each ifEntry with an ifType of
docsCableUpstream (129).
For Docsis 2.0 Cable Modem Termination Systems, an entry
exists for each ifEntry with an ifType of
docsCableUpstreamChannel (205)."
INDEX { ifIndex }
::= { docsIfSignalQualityTable 1 }
DocsIfSignalQualityEntry ::= SEQUENCE {
docsIfSigQIncludesContention TruthValue,
docsIfSigQUnerroreds Counter32,
docsIfSigQCorrecteds Counter32,
docsIfSigQUncorrectables Counter32,
docsIfSigQSignalNoise TenthdB,
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docsIfSigQMicroreflections Integer32,
docsIfSigQEqualizationData OCTET STRING,
docsIfSigQExtUnerroreds Counter64,
docsIfSigQExtCorrecteds Counter64,
docsIfSigQExtUncorrectables Counter64
}
docsIfSigQIncludesContention OBJECT-TYPE
SYNTAX TruthValue
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"true(1) if this CMTS includes contention intervals in
the counters in this table. Always false(2) for CMs."
REFERENCE
"Data-Over-Cable Service Interface Specifications: Radio
Frequency Interface Specification SP-RFIv2.0-I04-030730,
Section 9.4.1"
::= { docsIfSignalQualityEntry 1 }
docsIfSigQUnerroreds OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"Codewords received on this channel without error.
This includes all codewords, whether or not they
were part of frames destined for this device.
Discontinuities in the value of this counter can occur
at reinitialization of the managed system, and at other
times as indicated by the value of
ifCounterDiscontinuityTime for the associated ifIndex."
REFERENCE
"Data-Over-Cable Service Interface Specifications: Radio
Frequency Interface Specification SP-RFIv2.0-I04-030730,
Section 6.2.5."
::= { docsIfSignalQualityEntry 2 }
docsIfSigQCorrecteds OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"Codewords received on this channel with correctable
errors. This includes all codewords, whether or not
they were part of frames destined for this device.
Discontinuities in the value of this counter can occur
at reinitialization of the managed system, and at other
times as indicated by the value of
ifCounterDiscontinuityTime for the associated ifIndex."
REFERENCE
"Data-Over-Cable Service Interface Specifications: Radio
Frequency Interface Specification SP-RFIv2.0-I04-030730,
Section 6.2.5."
::= { docsIfSignalQualityEntry 3 }
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docsIfSigQUncorrectables OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"Codewords received on this channel with uncorrectable
errors. This includes all codewords, whether or not
they were part of frames destined for this device.
Discontinuities in the value of this counter can occur
at reinitialization of the managed system, and at other
times as indicated by the value of
ifCounterDiscontinuityTime for the associated ifIndex."
REFERENCE
"Data-Over-Cable Service Interface Specifications: Radio
Frequency Interface Specification SP-RFIv2.0-I04-030730,
Section 6.2.5."
::= { docsIfSignalQualityEntry 4 }
docsIfSigQSignalNoise OBJECT-TYPE
SYNTAX TenthdB
UNITS "dB"
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"Signal/Noise ratio as perceived for this channel.
At the CM, describes the Signal/Noise of the downstream
channel. At the CMTS, describes the average Signal/Noise
of the upstream channel."
REFERENCE
"Data-Over-Cable Service Interface Specifications: Radio
Frequency Interface Specification SP-RFIv2.0-I04-030730,
Tables 4-1 and 4-2"
::= { docsIfSignalQualityEntry 5 }
docsIfSigQMicroreflections OBJECT-TYPE
SYNTAX Integer32 (0..255)
UNITS "dBc"
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"Total microreflections including in-channel response
as perceived on this interface, measured in dBc below
the signal level.
This object is not assumed to return an absolutely
accurate value, but should give a rough indication
of microreflections received on this interface.
It is up to the implementer to provide information
as accurate as possible.
Discontinuities in the value of this counter can occur
at reinitialization of the managed system, and at other
times as indicated by the value of
ifCounterDiscontinuityTime for the associated ifIndex."
REFERENCE
"Data-Over-Cable Service Interface Specifications: Radio
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Frequency Interface Specification SP-RFIv2.0-I04-030730,
Tables 4-1 and 4-2"
::= { docsIfSignalQualityEntry 6 }
docsIfSigQEqualizationData OBJECT-TYPE
SYNTAX OCTET STRING (SIZE (0..512))
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"At the CM, returns the equalization data for the
downstream channel. At the CMTS, returns the average
equalization data for the upstream channel. Returns an
empty string if the value is unknown or if there is no
equalization data available or defined."
REFERENCE
"Data-Over-Cable Service Interface Specifications: Radio
Frequency Interface Specification SP-RFIv2.0-I04-030730,
Section 9.3.2."
::= { docsIfSignalQualityEntry 7 }
docsIfSigQExtUnerroreds OBJECT-TYPE
SYNTAX Counter64
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"Codewords received on this channel without error.
This includes all codewords, whether or not they
were part of frames destined for this device.
This is the 64 bit version of docsIfSigQUnerroreds.
Discontinuities in the value of this counter can occur
at reinitialization of the managed system, and at other
times as indicated by the value of
ifCounterDiscontinuityTime for the associated ifIndex."
REFERENCE
"Data-Over-Cable Service Interface Specifications: Radio
Frequency Interface Specification SP-RFIv2.0-I04-030730,
Section 6.2.5."
::= { docsIfSignalQualityEntry 8 }
docsIfSigQExtCorrecteds OBJECT-TYPE
SYNTAX Counter64
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"Codewords received on this channel with correctable
errors. This includes all codewords, whether or not
they were part of frames destined for this device.
This is the 64 bit version of docsIfSigQCorrecteds.
Discontinuities in the value of this counter can occur
at reinitialization of the managed system, and at other
times as indicated by the value of
ifCounterDiscontinuityTime for the associated ifIndex."
REFERENCE
"Data-Over-Cable Service Interface Specifications: Radio
Frequency Interface Specification SP-RFIv2.0-I04-030730,
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Internet Draft DOCSIS RF Interface MIB October 2003Section 6.2.5."
::= { docsIfSignalQualityEntry 9 }
docsIfSigQExtUncorrectables OBJECT-TYPE
SYNTAX Counter64
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"Codewords received on this channel with uncorrectable
errors. This includes all codewords, whether or not
they were part of frames destined for this device.
This is the 64 bit version of docsIfSigQUncorrectables.
Discontinuities in the value of this counter can occur
at reinitialization of the managed system, and at other
times as indicated by the value of
ifCounterDiscontinuityTime for the associated ifIndex."
REFERENCE
"Data-Over-Cable Service Interface Specifications: Radio
Frequency Interface Specification SP-RFIv2.0-I04-030730,
Section 6.2.5."
::= { docsIfSignalQualityEntry 10 }
--
-- DOCSIS Version of the device
--
docsIfDocsisBaseCapability OBJECT-TYPE
SYNTAX DocsisVersion
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"Indication of the DOCSIS capability of the device.
This object mirrors docsIfDocsisCapability from the
DocsIfExt mib."
REFERENCE
"Data-Over-Cable Service Interface Specifications: Radio
Frequency Interface Specification SP-RFIv2.0-I04-030730,
Annex G."
::= { docsIfBaseObjects 5 }
--
-- CABLE MODEM GROUP
--
-- #######
--
-- The CM MAC Table
--
docsIfCmMacTable OBJECT-TYPE
SYNTAX SEQUENCE OF DocsIfCmMacEntry
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Discontinuities in the value of this counter can occur
at reinitialization of the managed system, and at other
times as indicated by the value of
ifCounterDiscontinuityTime for the associated ifIndex."
REFERENCE
"Data-Over-Cable Service Interface Specifications: Radio
Frequency Interface Specification SP-RFIv2.0-I04-030730,
Section 8.3.2."
::= { docsIfCmStatusEntry 5 }
docsIfCmStatusInvalidMaps OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"Number of times the CM received invalid MAP messages.
Discontinuities in the value of this counter can occur
at reinitialization of the managed system, and at other
times as indicated by the value of
ifCounterDiscontinuityTime for the associated ifIndex."
REFERENCE
"Data-Over-Cable Service Interface Specifications: Radio
Frequency Interface Specification SP-RFIv2.0-I04-030730,
Section 8.3.4."
::= { docsIfCmStatusEntry 6 }
docsIfCmStatusInvalidUcds OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"Number of times the CM received invalid UCD messages.
Discontinuities in the value of this counter can occur
at reinitialization of the managed system, and at other
times as indicated by the value of
ifCounterDiscontinuityTime for the associated ifIndex."
REFERENCE
"Data-Over-Cable Service Interface Specifications: Radio
Frequency Interface Specification SP-RFIv2.0-I04-030730,
Section 8.3.3."
::= { docsIfCmStatusEntry 7 }
docsIfCmStatusInvalidRangingResponses OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"Number of times the CM received invalid ranging response
messages.
Discontinuities in the value of this counter can occur
at reinitialization of the managed system, and at other
times as indicated by the value of
ifCounterDiscontinuityTime for the associated ifIndex."
REFERENCE
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"Data-Over-Cable Service Interface Specifications: Radio
Frequency Interface Specification SP-RFIv2.0-I04-030730,
Section 8.3.6."
::= { docsIfCmStatusEntry 8 }
docsIfCmStatusInvalidRegistrationResponses OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"Number of times the CM received invalid registration
response messages.
Discontinuities in the value of this counter can occur
at reinitialization of the managed system, and at other
times as indicated by the value of
ifCounterDiscontinuityTime for the associated ifIndex."
REFERENCE
"Data-Over-Cable Service Interface Specifications: Radio
Frequency Interface Specification SP-RFIv2.0-I04-030730,
Section 8.3.8."
::= { docsIfCmStatusEntry 9 }
docsIfCmStatusT1Timeouts OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"Number of times counter T1 expired in the CM.
Discontinuities in the value of this counter can occur
at reinitialization of the managed system, and at other
times as indicated by the value of
ifCounterDiscontinuityTime for the associated ifIndex."
REFERENCE
"Data-Over-Cable Service Interface Specifications: Radio
Frequency Interface Specification SP-RFIv2.0-I04-030730,
Figure 9-2."
::= { docsIfCmStatusEntry 10 }
docsIfCmStatusT2Timeouts OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"Number of times counter T2 expired in the CM.
Discontinuities in the value of this counter can occur
at reinitialization of the managed system, and at other
times as indicated by the value of
ifCounterDiscontinuityTime for the associated ifIndex."
REFERENCE
"Data-Over-Cable Service Interface Specifications: Radio
Frequency Interface Specification SP-RFIv2.0-I04-030730,
Figure 9-2."
::= { docsIfCmStatusEntry 11 }
docsIfCmStatusT3Timeouts OBJECT-TYPE
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SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"Number of times counter T3 expired in the CM.
Discontinuities in the value of this counter can occur
at reinitialization of the managed system, and at other
times as indicated by the value of
ifCounterDiscontinuityTime for the associated ifIndex."
REFERENCE
"Data-Over-Cable Service Interface Specifications: Radio
Frequency Interface Specification SP-RFIv2.0-I04-030730,
Figure 9-2."
::= { docsIfCmStatusEntry 12 }
docsIfCmStatusT4Timeouts OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"Number of times counter T4 expired in the CM.
Discontinuities in the value of this counter can occur
at reinitialization of the managed system, and at other
times as indicated by the value of
ifCounterDiscontinuityTime for the associated ifIndex."
REFERENCE
"Data-Over-Cable Service Interface Specifications: Radio
Frequency Interface Specification SP-RFIv2.0-I04-030730,
Figure 9-2."
::= { docsIfCmStatusEntry 13 }
docsIfCmStatusRangingAborteds OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"Number of times the ranging process was aborted
by the CMTS.
Discontinuities in the value of this counter can occur
at reinitialization of the managed system, and at other
times as indicated by the value of
ifCounterDiscontinuityTime for the associated ifIndex."
REFERENCE
"Data-Over-Cable Service Interface Specifications: Radio
Frequency Interface Specification SP-RFIv2.0-I04-030730,
Section 9.3.3."
::= { docsIfCmStatusEntry 14 }
docsIfCmStatusDocsisOperMode OBJECT-TYPE
SYNTAX DocsisQosVersion
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"Indication whether the device has registered using 1.0
Class of Service or 1.1 Quality of Service.
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An unregistered CM should indicate 1.1 QOS for a
docsIfDocsisBaseCapability value of Docsis 1.1/2.0. An
unregistered CM should indicate 1.0 COS for a
docsIfDocsisBaseCapability value of Docsis 1.0.
This object mirrors docsIfCmDocsisOperMode from the
docsIfExt mib."
REFERENCE
"Data-Over-Cable Service Interface Specifications: Radio
Frequency Interface Specification SP-RFIv2.0-I04-030730,
Annex G."
::= { docsIfCmStatusEntry 15 }
docsIfCmStatusModulationType OBJECT-TYPE
SYNTAX DocsisUpstreamTypeStatus
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"Indicates modulation type status currently used by the
CM. Since this object specifically identifies PHY mode,
the shared upstream channel type is not permitted."
REFERENCE
"Data-Over-Cable Service Interface Specifications: Radio
Frequency Interface Specification SP-RFIv2.0-I04-030730,
Section 6.2.1."
::= { docsIfCmStatusEntry 16 }
docsIfCmStatusEqualizationData OBJECT-TYPE
SYNTAX OCTET STRING (SIZE (0..512))
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"Pre-equalization data for this CM after convolution with
data indicated in the RNG-RSP. This data is valid when
docsIfUpChannelPreEqEnable is set to true. The
value should be formatted as defined in the following
REFERENCE, beginning with the main tap location field.
The type and length fields shown in the referenced figure
must not be included.
Returns an empty string if the value is unknown or if
there is no equalization data available or defined."
REFERENCE
"Data-Over-Cable Service Interface Specifications: Radio
Frequency Interface Specification SP-RFIv2.0-I04-030730,
Figure 8-23."
::= { docsIfCmStatusEntry 17 }
docsIfCmStatusUCCs OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of successful Upstream Channel Change
transactions.
Discontinuities in the value of this counter can occur
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at reinitialization of the managed system, and at other
times as indicated by the value of
ifCounterDiscontinuityTime for the associated ifIndex."
::= { docsIfCmStatusEntry 18 }
docsIfCmStatusUCCFails OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of failed Upstream Channel Change
transactions.
Discontinuities in the value of this counter can occur
at reinitialization of the managed system, and at other
times as indicated by the value of
ifCounterDiscontinuityTime for the associated ifIndex."
::= { docsIfCmStatusEntry 19 }
--
-- The Cable Modem Service Table
--
docsIfCmServiceTable OBJECT-TYPE
SYNTAX SEQUENCE OF DocsIfCmServiceEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"Describes the attributes of each upstream service queue
on a CM."
::= { docsIfCmObjects 3 }
docsIfCmServiceEntry OBJECT-TYPE
SYNTAX DocsIfCmServiceEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"Describes the attributes of an upstream bandwidth service
queue.
An entry in this table exists for each Service ID.
The primary index is an ifIndex with an ifType of
docsCableMaclayer(127)."
INDEX { ifIndex, docsIfCmServiceId }
::= { docsIfCmServiceTable 1 }
DocsIfCmServiceEntry ::= SEQUENCE {
docsIfCmServiceId Integer32,
docsIfCmServiceQosProfile Integer32,
docsIfCmServiceTxSlotsImmed Counter32,
docsIfCmServiceTxSlotsDed Counter32,
docsIfCmServiceTxRetries Counter32,
docsIfCmServiceTxExceededs Counter32,
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docsIfCmServiceRqRetries Counter32,
docsIfCmServiceRqExceededs Counter32,
docsIfCmServiceExtTxSlotsImmed Counter64,
docsIfCmServiceExtTxSlotsDed Counter64
}
docsIfCmServiceId OBJECT-TYPE
SYNTAX Integer32 (1..16383)
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"Identifies a service queue for upstream bandwidth. The
attributes of this service queue are shared between the
CM and the CMTS. The CMTS allocates upstream bandwidth
to this service queue based on requests from the CM and
on the class of service associated with this queue."
::= { docsIfCmServiceEntry 1 }
docsIfCmServiceQosProfile OBJECT-TYPE
SYNTAX Integer32 (0..16383)
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The index in docsIfQosProfileTable describing the quality
of service attributes associated with this particular
service. If no associated entry in docsIfQosProfileTable
exists, this object returns a value of zero."
::= { docsIfCmServiceEntry 2 }
docsIfCmServiceTxSlotsImmed OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of upstream mini-slots which have been used to
transmit data PDUs in immediate (contention) mode. This
includes only those PDUs that are presumed to have
arrived at the headend (i.e., those which were explicitly
acknowledged.) It does not include retransmission attempts
or mini-slots used by Requests.
Discontinuities in the value of this counter can occur
at reinitialization of the managed system, and at other
times as indicated by the value of
ifCounterDiscontinuityTime for the associated ifIndex."
REFERENCE
"Data-Over-Cable Service Interface Specifications: Radio
Frequency Interface Specification SP-RFIv2.0-I04-030730,
Section 9.4."
::= { docsIfCmServiceEntry 3 }
docsIfCmServiceTxSlotsDed OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
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"The number of upstream mini-slots which have been used to
transmit data PDUs in dedicated mode (i.e., as a result
of a unicast Data Grant).
Discontinuities in the value of this counter can occur
at reinitialization of the managed system, and at other
times as indicated by the value of
ifCounterDiscontinuityTime for the associated ifIndex."
REFERENCE
"Data-Over-Cable Service Interface Specifications: Radio
Frequency Interface Specification SP-RFIv2.0-I04-030730,
Section 9.4."
::= { docsIfCmServiceEntry 4 }
docsIfCmServiceTxRetries OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of attempts to transmit data PDUs containing
requests for acknowledgment that did not result in
acknowledgment.
Discontinuities in the value of this counter can occur
at reinitialization of the managed system, and at other
times as indicated by the value of
ifCounterDiscontinuityTime for the associated ifIndex."
REFERENCE
"Data-Over-Cable Service Interface Specifications: Radio
Frequency Interface Specification SP-RFIv2.0-I04-030730,
Section 9.4."
::= { docsIfCmServiceEntry 5 }
docsIfCmServiceTxExceededs OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of data PDUs transmission failures due to
excessive retries without acknowledgment.
Discontinuities in the value of this counter can occur
at reinitialization of the managed system, and at other
times as indicated by the value of
ifCounterDiscontinuityTime for the associated ifIndex."
REFERENCE
"Data-Over-Cable Service Interface Specifications: Radio
Frequency Interface Specification SP-RFIv2.0-I04-030730,
Section 9.4."
::= { docsIfCmServiceEntry 6 }
docsIfCmServiceRqRetries OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of attempts to transmit bandwidth requests
which did not result in acknowledgment.
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Discontinuities in the value of this counter can occur
at reinitialization of the managed system, and at other
times as indicated by the value of
ifCounterDiscontinuityTime for the associated ifIndex."
REFERENCE
"Data-Over-Cable Service Interface Specifications: Radio
Frequency Interface Specification SP-RFIv2.0-I04-030730,
Section 9.4."
::= { docsIfCmServiceEntry 7 }
docsIfCmServiceRqExceededs OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of requests for bandwidth which failed due to
excessive retries without acknowledgment.
Discontinuities in the value of this counter can occur
at reinitialization of the managed system, and at other
times as indicated by the value of
ifCounterDiscontinuityTime for the associated ifIndex."
REFERENCE
"Data-Over-Cable Service Interface Specifications: Radio
Frequency Interface Specification SP-RFIv2.0-I04-030730,
Section 9.4."
::= { docsIfCmServiceEntry 8 }
docsIfCmServiceExtTxSlotsImmed OBJECT-TYPE
SYNTAX Counter64
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of upstream mini-slots which have been used to
transmit data PDUs in immediate (contention) mode. This
includes only those PDUs that are presumed to have
arrived at the headend (i.e., those which were explicitly
acknowledged.) It does not include retransmission attempts
or mini-slots used by Requests.
Discontinuities in the value of this counter can occur
at reinitialization of the managed system, and at other
times as indicated by the value of
ifCounterDiscontinuityTime for the associated ifIndex."
REFERENCE
"Data-Over-Cable Service Interface Specifications: Radio
Frequency Interface Specification SP-RFIv2.0-I04-030730,
Section 9.4."
::= { docsIfCmServiceEntry 9 }
docsIfCmServiceExtTxSlotsDed OBJECT-TYPE
SYNTAX Counter64
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of upstream mini-slots which have been used to
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-- This object has been obsoleted and replaced by
-- docsIfCmtsInsertInterval to fix a SYNTAX typing problem. New
-- implementations of this MIB should use that object instead.
docsIfCmtsInsertionInterval OBJECT-TYPE
SYNTAX TimeTicks
MAX-ACCESS read-write
STATUS obsolete
DESCRIPTION
"The amount of time to elapse between each broadcast
initial maintenance grant. Broadcast initial maintenance
grants are used to allow new cable modems to join the
network. Zero indicates that a vendor-specific algorithm
is used instead of a fixed time. Maximum amount of time
permitted by the specification is 2 seconds."
REFERENCE
"Data-Over-Cable Service Interface Specifications: Radio
Frequency Interface Specification SP-RFIv2.0-I04-030730,
Annex B."
::= { docsIfCmtsMacEntry 5 }
docsIfCmtsInvitedRangingAttempts OBJECT-TYPE
SYNTAX Integer32 (0..1024)
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"The maximum number of attempts to make on invitations
for ranging requests. A value of zero means the system
should attempt to range forever."
REFERENCE
"Data-Over-Cable Service Interface Specifications: Radio
Frequency Interface Specification SP-RFIv2.0-I04-030730,
Section 9.3.3 and Annex B."
::= { docsIfCmtsMacEntry 6 }
docsIfCmtsInsertInterval OBJECT-TYPE
SYNTAX TimeInterval
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"The amount of time to elapse between each broadcast
initial maintenance grant. Broadcast initial maintenance
grants are used to allow new cable modems to join the
network. Zero indicates that a vendor-specific algorithm
is used instead of a fixed time. Maximum amount of time
permitted by the specification is 2 seconds."
REFERENCE
"Data-Over-Cable Service Interface Specifications: Radio
Frequency Interface Specification SP-RFIv2.0-I04-030730,
Annex B."
::= { docsIfCmtsMacEntry 7 }
--
--
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"This object counts ranging attempts that were explicitly
aborted by the CMTS.
Discontinuities in the value of this counter can occur
at reinitialization of the managed system, and at other
times as indicated by the value of
ifCounterDiscontinuityTime for the associated ifIndex."
REFERENCE
"Data-Over-Cable Service Interface Specifications: Radio
Frequency Interface Specification SP-RFIv2.0-I04-030730,
Section 8.3.6."
::= { docsIfCmtsStatusEntry 2 }
docsIfCmtsStatusInvalidRegReqs OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"This object counts invalid REG-REQ messages received on
this interface. That is, syntax, out of range parameters,
or erroneous requests.
Discontinuities in the value of this counter can occur
at reinitialization of the managed system, and at other
times as indicated by the value of
ifCounterDiscontinuityTime for the associated ifIndex."
REFERENCE
"Data-Over-Cable Service Interface Specifications: Radio
Frequency Interface Specification SP-RFIv2.0-I04-030730,
Section 8.3.7."
::= { docsIfCmtsStatusEntry 3 }
docsIfCmtsStatusFailedRegReqs OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"This object counts failed registration attempts. Included
are docsIfCmtsStatusInvalidRegReqs, authentication and
class of service failures.
Discontinuities in the value of this counter can occur
at reinitialization of the managed system, and at other
times as indicated by the value of
ifCounterDiscontinuityTime for the associated ifIndex."
REFERENCE
"Data-Over-Cable Service Interface Specifications: Radio
Frequency Interface Specification SP-RFIv2.0-I04-030730,
Section 8.3.7."
::= { docsIfCmtsStatusEntry 4 }
docsIfCmtsStatusInvalidDataReqs OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"This object counts invalid data request messages
received on this interface.
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Discontinuities in the value of this counter can occur
at reinitialization of the managed system, and at other
times as indicated by the value of
ifCounterDiscontinuityTime for the associated ifIndex."
::= { docsIfCmtsStatusEntry 5 }
docsIfCmtsStatusT5Timeouts OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"This object counts the number of times counter T5
expired on this interface.
Discontinuities in the value of this counter can occur
at reinitialization of the managed system, and at other
times as indicated by the value of
ifCounterDiscontinuityTime for the associated ifIndex."
REFERENCE
"Data-Over-Cable Service Interface Specifications: Radio
Frequency Interface Specification SP-RFIv2.0-I04-030730,
Figure 9-2."
::= { docsIfCmtsStatusEntry 6 }
--
-- CM status table (within CMTS).
-- This table is implemented only at the CMTS.
-- It contains per CM status information available in the CMTS.
--
docsIfCmtsCmStatusTable OBJECT-TYPE
SYNTAX SEQUENCE OF DocsIfCmtsCmStatusEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"A set of objects in the CMTS, maintained for each
Cable Modem connected to this CMTS."
::= { docsIfCmtsObjects 3 }
docsIfCmtsCmStatusEntry OBJECT-TYPE
SYNTAX DocsIfCmtsCmStatusEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"Status information for a single Cable Modem.
An entry in this table exists for each Cable Modem
that is connected to the CMTS implementing this table."
INDEX { docsIfCmtsCmStatusIndex }
::= { docsIfCmtsCmStatusTable 1 }
DocsIfCmtsCmStatusEntry ::= SEQUENCE {
docsIfCmtsCmStatusIndex Integer32,
docsIfCmtsCmStatusMacAddress MacAddress,
docsIfCmtsCmStatusIpAddress IpAddress, -- Deprecated
docsIfCmtsCmStatusDownChannelIfIndex InterfaceIndexOrZero,
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This object has been deprecated and replaced by
docsIfCmtsCmStatusInetAddressType and
docsIfCmtsCmStatusInetAddress, to enable IPv6 addressing
in the future."
::= { docsIfCmtsCmStatusEntry 3 }
docsIfCmtsCmStatusDownChannelIfIndex OBJECT-TYPE
SYNTAX InterfaceIndexOrZero
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"IfIndex of the downstream channel this CM is connected
to. If the downstream channel is unknown, this object
returns a value of zero."
::= { docsIfCmtsCmStatusEntry 4 }
docsIfCmtsCmStatusUpChannelIfIndex OBJECT-TYPE
SYNTAX InterfaceIndexOrZero
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"IfIndex of the upstream channel this CM is connected
to. If the upstream channel is unknown, this object
returns a value of zero."
::= { docsIfCmtsCmStatusEntry 5 }
docsIfCmtsCmStatusRxPower OBJECT-TYPE
SYNTAX TenthdBmV
UNITS "dBmV"
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The receive power as perceived for upstream data from
this Cable Modem.
If the receive power is unknown, this object returns
a value of zero."
REFERENCE
"Data-Over-Cable Service Interface Specifications: Radio
Frequency Interface Specification SP-RFIv2.0-I04-030730,
Table 6-11."
::= { docsIfCmtsCmStatusEntry 6 }
docsIfCmtsCmStatusTimingOffset OBJECT-TYPE
SYNTAX Unsigned32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"A measure of the current round trip time for this CM.
Used for timing of CM upstream transmissions to ensure
synchronized arrivals at the CMTS. Units are in terms
of (6.25 microseconds/64). Returns zero if the value
is unknown.
For channels requiring finer resolution, please refer to
object docsIfCmtsCmStatusHighResolutionTimingOffset."
REFERENCE
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"Data-Over-Cable Service Interface Specifications: Radio
Frequency Interface Specification SP-RFIv2.0-I04-030730,
Section 6.2.17."
::= { docsIfCmtsCmStatusEntry 7 }
docsIfCmtsCmStatusEqualizationData OBJECT-TYPE
SYNTAX OCTET STRING (SIZE (0..512))
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"Equalization data for this CM. Returns an empty string
if the value is unknown or if there is no equalization
data available or defined."
REFERENCE
"Data-Over-Cable Service Interface Specifications: Radio
Frequency Interface Specification SP-RFIv2.0-I04-030730,
Figure 8-23."
::= { docsIfCmtsCmStatusEntry 8 }
docsIfCmtsCmStatusValue OBJECT-TYPE
SYNTAX INTEGER {
other(1),
ranging(2),
rangingAborted(3),
rangingComplete(4),
ipComplete(5),
registrationComplete(6),
accessDenied(7),
operational(8), -- deprecated
registeredBPIInitializing(9)
}
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"Current Cable Modem connectivity state, as specified
in the RF Interface Specification. Returned status
information is the CM status as assumed by the CMTS,
and indicates the following events:
other(1)
Any state other than below.
ranging(2)
The CMTS has received an Initial Ranging Request
message from the CM, and the ranging process is not
yet complete.
rangingAborted(3)
The CMTS has sent a Ranging Abort message to the CM.
rangingComplete(4)
The CMTS has sent a Ranging Complete message to the CM.
ipComplete(5)
The CMTS has received a DHCP reply message and
forwarded it to the CM.
registrationComplete(6)
The CMTS has sent a Registration Response message to
the CM.
accessDenied(7)
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The CMTS has sent a Registration Aborted message
to the CM.
operational(8) -- deprecated value
This value has been deprecated in favor of the more
Specific registeredBPIInitializing(9).
registeredBPIInitializing(9)
Baseline Privacy (BPI) is enabled and the CMTS is in the
process of completing BPI initialization. This state may
last for a significant length of time if failures occur
during the initialization process. After completion of
BPI initialization, the CMTS will report
registrationComplete(6).
The CMTS only needs to report states it is able to
detect."
REFERENCE
"Data-Over-Cable Service Interface Specifications: Radio
Frequency Interface Specification SP-RFIv2.0-I04-030730,
Section 11.2."
::= { docsIfCmtsCmStatusEntry 9 }
docsIfCmtsCmStatusUnerroreds OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"Codewords received without error from this Cable Modem.
Discontinuities in the value of this counter can occur
at reinitialization of the managed system, and at other
times as indicated by the value of
ifCounterDiscontinuityTime for the associated ifIndex."
REFERENCE
"Data-Over-Cable Service Interface Specifications: Radio
Frequency Interface Specification SP-RFIv2.0-I04-030730,
Section 6.2.5."
::= { docsIfCmtsCmStatusEntry 10 }
docsIfCmtsCmStatusCorrecteds OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"Codewords received with correctable errors from this
Cable Modem.
Discontinuities in the value of this counter can occur
at reinitialization of the managed system, and at other
times as indicated by the value of
ifCounterDiscontinuityTime for the associated ifIndex."
REFERENCE
"Data-Over-Cable Service Interface Specifications: Radio
Frequency Interface Specification SP-RFIv2.0-I04-030730,
Section 6.2.5."
::= { docsIfCmtsCmStatusEntry 11 }
docsIfCmtsCmStatusUncorrectables OBJECT-TYPE
SYNTAX Counter32
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MAX-ACCESS read-only
STATUS current
DESCRIPTION
"Codewords received with uncorrectable errors from this
Cable Modem.
Discontinuities in the value of this counter can occur
at reinitialization of the managed system, and at other
times as indicated by the value of
ifCounterDiscontinuityTime for the associated ifIndex."
REFERENCE
"Data-Over-Cable Service Interface Specifications: Radio
Frequency Interface Specification SP-RFIv2.0-I04-030730,
Section 6.2.5."
::= { docsIfCmtsCmStatusEntry 12 }
docsIfCmtsCmStatusSignalNoise OBJECT-TYPE
SYNTAX TenthdB
UNITS "dB"
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"Signal/Noise ratio as perceived for upstream data from
this Cable Modem.
If the Signal/Noise is unknown, this object returns
a value of zero."
REFERENCE
"Data-Over-Cable Service Interface Specifications: Radio
Frequency Interface Specification SP-RFIv2.0-I04-030730,
Tables 4-1 and 4-2."
::= { docsIfCmtsCmStatusEntry 13 }
docsIfCmtsCmStatusMicroreflections OBJECT-TYPE
SYNTAX Integer32 (0..255)
UNITS "dBc"
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"Total microreflections including in-channel response
as perceived on this interface, measured in dBc below
the signal level.
This object is not assumed to return an absolutely
accurate value, but should give a rough indication
of microreflections received on this interface.
It is up to the implementer to provide information
as accurate as possible.
Discontinuities in the value of this counter can occur
at reinitialization of the managed system, and at other
times as indicated by the value of
ifCounterDiscontinuityTime for the associated ifIndex."
REFERENCE
"Data-Over-Cable Service Interface Specifications: Radio
Frequency Interface Specification SP-RFIv2.0-I04-030730,
Tables 4-1 and 4-2"
::= { docsIfCmtsCmStatusEntry 14 }
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docsIfCmtsCmStatusExtUnerroreds OBJECT-TYPE
SYNTAX Counter64
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"Codewords received without error from this Cable Modem.
Discontinuities in the value of this counter can occur
at reinitialization of the managed system, and at other
times as indicated by the value of
ifCounterDiscontinuityTime for the associated ifIndex."
REFERENCE
"Data-Over-Cable Service Interface Specifications: Radio
Frequency Interface Specification SP-RFIv2.0-I04-030730,
Section 6.2.5."
::= { docsIfCmtsCmStatusEntry 15 }
docsIfCmtsCmStatusExtCorrecteds OBJECT-TYPE
SYNTAX Counter64
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"Codewords received with correctable errors from this
Cable Modem.
Discontinuities in the value of this counter can occur
at reinitialization of the managed system, and at other
times as indicated by the value of
ifCounterDiscontinuityTime for the associated ifIndex."
REFERENCE
"Data-Over-Cable Service Interface Specifications: Radio
Frequency Interface Specification SP-RFIv2.0-I04-030730,
Section 6.2.5."
::= { docsIfCmtsCmStatusEntry 16 }
docsIfCmtsCmStatusExtUncorrectables OBJECT-TYPE
SYNTAX Counter64
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"Codewords received with uncorrectable errors from this
Cable Modem.
Discontinuities in the value of this counter can occur
at reinitialization of the managed system, and at other
times as indicated by the value of
ifCounterDiscontinuityTime for the associated ifIndex."
REFERENCE
"Data-Over-Cable Service Interface Specifications: Radio
Frequency Interface Specification SP-RFIv2.0-I04-030730,
Section 6.2.5."
::= { docsIfCmtsCmStatusEntry 17 }
docsIfCmtsCmStatusDocsisRegMode OBJECT-TYPE
SYNTAX DocsisQosVersion
MAX-ACCESS read-only
STATUS current
DESCRIPTION
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" Indication whether the CM has registered using 1.0
Class of Service or 1.1 Quality of Service.
This object mirrors docsIfCmtsCmStatusDocsisMode from
the docsIfExt mib."
REFERENCE
"Data-Over-Cable Service Interface Specifications: Radio
Frequency Interface Specification SP-RFIv2.0-I04-030730,
Annex G."
::= { docsIfCmtsCmStatusEntry 18 }
docsIfCmtsCmStatusModulationType OBJECT-TYPE
SYNTAX DocsisUpstreamTypeStatus
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"Indicates modulation type currently used by the CM. Since
this object specifically identifies PHY mode, the shared
type is not permitted. If the upstream channel is
unknown, this object returns a value of zero."
REFERENCE
"Data-Over-Cable Service Interface Specifications: Radio
Frequency Interface Specification SP-RFIv2.0-I04-030730,
Table 8-19."
::= { docsIfCmtsCmStatusEntry 19 }
docsIfCmtsCmStatusInetAddressType OBJECT-TYPE
SYNTAX InetAddressType
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The type of internet address of
docsIfCmtsCmStatusInetAddress. If the cable modem
Internet address is unassigned or unknown, then the
value of this object is unknown(0)."
::= { docsIfCmtsCmStatusEntry 20 }
docsIfCmtsCmStatusInetAddress OBJECT-TYPE
SYNTAX InetAddress
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"Internet address of this Cable Modem. If the Cable
Modem has no Internet address assigned, or the Internet
address is unknown, the value of this object is the
empty string. If the Cable Modem has multiple Internet
addresses, this object returns the Internet address
associated with the Cable (i.e. RF MAC) interface."
::= { docsIfCmtsCmStatusEntry 21 }
docsIfCmtsCmStatusValueLastUpdate OBJECT-TYPE
SYNTAX TimeStamp
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The value of sysUpTime when docsIfCmtsCmStatusValue
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was last updated."
::= { docsIfCmtsCmStatusEntry 22 }
docsIfCmtsCmStatusHighResolutionTimingOffset OBJECT-TYPE
SYNTAX Unsigned32 (0..4294967295)
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"A measure of the current round trip time for this CM.
Used for timing of CM upstream transmissions to ensure
synchronized arrivals at the CMTS. Units are in terms
of (6.25 microseconds/(64*256)). Returns zero if the value
is unknown.
This is the high resolution version of object
docsIfCmtsCmStatusTimingOffset, for channels requiring
finer resolution."
REFERENCE
"Data-Over-Cable Service Interface Specifications: Radio
Frequency Interface Specification SP-RFIv2.0-I04-030730,
Section 6.2.17."
::= { docsIfCmtsCmStatusEntry 23 }
--
-- The CMTS Service Table.
--
docsIfCmtsServiceTable OBJECT-TYPE
SYNTAX SEQUENCE OF DocsIfCmtsServiceEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"Describes the attributes of upstream service queues
in a Cable Modem Termination System."
::= { docsIfCmtsObjects 4 }
docsIfCmtsServiceEntry OBJECT-TYPE
SYNTAX DocsIfCmtsServiceEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"Describes the attributes of a single upstream bandwidth
service queue.
Entries in this table exist for each ifEntry with an
ifType of docsCableMaclayer(127), and for each service
queue (Service ID) within this MAC layer.
Entries in this table are created with the creation of
individual Service IDs by the MAC layer and removed
when a Service ID is removed."
INDEX { ifIndex, docsIfCmtsServiceId }
::= { docsIfCmtsServiceTable 1 }
DocsIfCmtsServiceEntry ::= SEQUENCE {
docsIfCmtsServiceId Integer32,
docsIfCmtsServiceCmStatusIndex Integer32, -- Deprecated
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docsIfCmtsServiceAdminStatus INTEGER,
docsIfCmtsServiceQosProfile Integer32,
docsIfCmtsServiceCreateTime TimeStamp,
docsIfCmtsServiceInOctets Counter32,
docsIfCmtsServiceInPackets Counter32,
docsIfCmtsServiceNewCmStatusIndex Integer32
}
docsIfCmtsServiceId OBJECT-TYPE
SYNTAX Integer32 (1..16383)
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"Identifies a service queue for upstream bandwidth. The
attributes of this service queue are shared between the
Cable Modem and the Cable Modem Termination System.
The CMTS allocates upstream bandwidth to this service
queue based on requests from the CM and on the class of
service associated with this queue."
::= { docsIfCmtsServiceEntry 1 }
docsIfCmtsServiceCmStatusIndex OBJECT-TYPE
SYNTAX Integer32 (0..65535)
MAX-ACCESS read-only
STATUS deprecated
DESCRIPTION
"Pointer to an entry in docsIfCmtsCmStatusTable identifying
the Cable Modem using this Service Queue. If multiple
Cable Modems are using this Service Queue, the value of
this object is zero.
This object has been deprecated and replaced by
docsIfCmtsServiceNewCmStatusIndex, to fix a mismatch
of the value range with respect to docsIfCmtsCmStatusIndex
(1..2147483647)."
::= { docsIfCmtsServiceEntry 2 }
docsIfCmtsServiceAdminStatus OBJECT-TYPE
SYNTAX INTEGER {
enabled(1),
disabled(2),
destroyed(3) }
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"Allows a service class for a particular modem to be
suppressed, (re-)enabled, or deleted altogether."
::= { docsIfCmtsServiceEntry 3 }
docsIfCmtsServiceQosProfile OBJECT-TYPE
SYNTAX Integer32 (0..16383)
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The index in docsIfQosProfileTable describing the quality
of service attributes associated with this particular
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service. If no associated docsIfQosProfileTable entry
exists, this object returns a value of zero."
::= { docsIfCmtsServiceEntry 4 }
docsIfCmtsServiceCreateTime OBJECT-TYPE
SYNTAX TimeStamp
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The value of sysUpTime when this entry was created."
::= { docsIfCmtsServiceEntry 5 }
docsIfCmtsServiceInOctets OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The cumulative number of Packet Data octets received
on this Service ID. The count does not include the
size of the Cable MAC header.
Discontinuities in the value of this counter can occur
at reinitialization of the managed system, and at other
times as indicated by the value of
ifCounterDiscontinuityTime for the associated ifIndex."
::= { docsIfCmtsServiceEntry 6 }
docsIfCmtsServiceInPackets OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The cumulative number of Packet Data packets received
on this Service ID.
Discontinuities in the value of this counter can occur
at reinitialization of the managed system, and at other
times as indicated by the value of
ifCounterDiscontinuityTime for the associated ifIndex."
::= { docsIfCmtsServiceEntry 7 }
docsIfCmtsServiceNewCmStatusIndex OBJECT-TYPE
SYNTAX Integer32 (0..2147483647)
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"Pointer (via docsIfCmtsCmStatusIndex) to an entry in
docsIfCmtsCmStatusTable identifying the Cable Modem
using this Service Queue. If multiple Cable Modems are
using this Service Queue, the value of this object is
zero."
::= { docsIfCmtsServiceEntry 8 }
--
-- The following table provides upstream channel modulation profiles.
-- Entries in this table can be
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-- re-used by one or more upstream channels. An upstream channel will
-- have a modulation profile
-- for each value of docsIfModIntervalUsageCode.
--
docsIfCmtsModulationTable OBJECT-TYPE
SYNTAX SEQUENCE OF DocsIfCmtsModulationEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"Describes a modulation profile associated with one or more
upstream channels."
::= { docsIfCmtsObjects 5 }
docsIfCmtsModulationEntry OBJECT-TYPE
SYNTAX DocsIfCmtsModulationEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"Describes a modulation profile for an Interval Usage Code
for one or more upstream channels.
Entries in this table are created by the operator. Initial
default entries may be created at system initialization
time. No individual objects have to be specified in order
to create an entry in this table.
Note that some objects do not have DEFVALs, but do have
calculated defaults and need not be specified during row
creation.
There is no restriction on the changing of values in this
table while their associated rows are active with the
exception of:
1. If a modulation profile is in use by one or more
upstream channels, the value of docsIfCmtsModChannelType
MUST NOT be changed.
2. If a modulation profile is in use by one or more
upstream channels, the value of docsIfCmtsModControl
MUST NOT be set to destroy(6) or notInService(2)."
INDEX { docsIfCmtsModIndex, docsIfCmtsModIntervalUsageCode}
::= { docsIfCmtsModulationTable 1 }
DocsIfCmtsModulationEntry ::= SEQUENCE {
docsIfCmtsModIndex Integer32,
docsIfCmtsModIntervalUsageCode INTEGER,
docsIfCmtsModControl RowStatus,
docsIfCmtsModType INTEGER,
docsIfCmtsModPreambleLen Integer32,
docsIfCmtsModDifferentialEncoding TruthValue,
docsIfCmtsModFECErrorCorrection Integer32,
docsIfCmtsModFECCodewordLength Integer32,
docsIfCmtsModScramblerSeed Integer32,
docsIfCmtsModMaxBurstSize Integer32,
docsIfCmtsModGuardTimeSize Unsigned32,
docsIfCmtsModLastCodewordShortened TruthValue,
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docsIfCmtsQosProfilePermissions OBJECT-TYPE
SYNTAX BITS {
createByManagement(0),
updateByManagement(1),
createByModems(2)
}
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"This object specifies permitted methods of creating
entries in docsIfQosProfileTable.
CreateByManagement(0) is set if entries can be created
using SNMP. UpdateByManagement(1) is set if updating
entries using SNMP is permitted. CreateByModems(2)
is set if entries can be created based on information
in REG-REQ MAC messages received from Cable Modems.
Information in this object is only applicable if
docsIfQosProfileTable is implemented as read-create.
Otherwise, this object is implemented as read-only
and returns CreateByModems(2).
Either CreateByManagement(0) or CreateByModems(1)
must be set when writing to this object.
Note that BITS objects are encoded most significant bit
first. For example, if bit 2 is set, the value of this
object is the octet string '20'H."
::= { docsIfCmtsObjects 6 }
docsIfCmtsMacToCmTable OBJECT-TYPE
SYNTAX SEQUENCE OF DocsIfCmtsMacToCmEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"This is a table to provide a quick access index into the
docsIfCmtsCmStatusTable. There is exactly one row in this
table for each row in the docsIfCmtsCmStatusTable. In
general, the management station should use this table only
to get a pointer into the docsIfCmtsCmStatusTable (which
corresponds to the CM's RF interface MAC address), and
should not iterate (e.g. GetNext through) this table."
::= { docsIfCmtsObjects 7 }
docsIfCmtsMacToCmEntry OBJECT-TYPE
SYNTAX DocsIfCmtsMacToCmEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"A row in the docsIfCmtsMacToCmTable.
An entry in this table exists for each Cable Modem
that is connected to the CMTS implementing this table."
INDEX { docsIfCmtsCmMac }
::= {docsIfCmtsMacToCmTable 1 }
DocsIfCmtsMacToCmEntry ::= SEQUENCE {
docsIfCmtsCmMac MacAddress,
docsIfCmtsCmPtr Integer32
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}
docsIfCmtsCmMac OBJECT-TYPE
SYNTAX MacAddress
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"The RF side MAC address for the referenced CM. (E.g. the
interface on the CM that has docsCableMacLayer(127) as
its ifType."
::= { docsIfCmtsMacToCmEntry 1 }
docsIfCmtsCmPtr OBJECT-TYPE
SYNTAX Integer32 (1..2147483647)
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"An row index into docsIfCmtsCmStatusTable. When queried
with the correct instance value (e.g. a CM's MAC address),
returns the index in docsIfCmtsCmStatusTable which
represents that CM."
::= { docsIfCmtsMacToCmEntry 2 }
-- The following independent object and associated table provide
-- operators with a mechanism to evaluate the load/utilization of
-- both upstream and downstream physical channels. This information
-- may be used for capacity planning and incident analysis, and may
-- be particularly helpful in provisioning of high value QOS.
--
-- Utilization is expressed as an index representing the calculated
-- percentage utilization of the upstream or downstream channel in
-- the most recent sampling interval (ie. utilization interval).
-- Refer to the DESCRIPTION field of the docsIfCmtsChannelUtUtilization
-- object for definitions and calculation details.
docsIfCmtsChannelUtilizationInterval OBJECT-TYPE
SYNTAX Integer32 (0..86400)
UNITS "seconds"
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"The time interval in seconds over which the channel
utilization index is calculated. All upstream/downstream
channels use the same
docsIfCmtsChannelUtilizationInterval.
Setting a value of zero disables utilization reporting.
A channel utilization index is calculated over a fixed
window applying to the most recent
docsIfCmtsChannelUtilizationInterval. It would therefore
be prudent to use a relatively short
docsIfCmtsChannelUtilizationInterval.
It is a vendor decision whether to reset the timer when
docsIfCmtsChannelUtilizationInterval is changed during a
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UNITS "percent"
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The calculated and truncated utilization index for this
physical upstream or downstream channel, accurate as of
the most recent docsIfCmtsChannelUtilizationInterval.
Upstream Channel Utilization Index:
The upstream channel utilization index is expressed as a
percentage of minislots utilized on the physical channel,
regardless of burst type. For an Initial Maintenance
region, the minislots for the complete region are
considered utilized if the CMTS received an upstream
burst within the region from any CM on the physical
channel. For contention REQ and REQ/DATA regions, the
minislots for a transmission opportunity within the
region are considered utilized if the CMTS received an
upstream burst within the opportunity from any CM on the
physical channel. For all other regions, utilized
minislots are those in which the CMTS granted
bandwidth to any unicast SID on the physical channel.
For an upstream interface that has multiple logical
upstream channels enabled, the utilization index is a
weighted sum of utilization indices for the logical
channels. The weight for each utilization index is the
percentage of upstream minislots allocated for the
corresponding logical channel.
Example:
If 75% of bandwidth is allocated to the first logical
channel and 25% to the second, and the utilization
indices for each are 60 and 40 respectively, the
utilization index for the upstream physical channel is
(60 * 0.75) + (40 * 0.25) = 55. This figure
applies to the most recent utilization interval.
Downstream Channel Utilization Index:
The downstream channel utilization index is a percentage
expressing the ratio between bytes used to transmit data
versus the total number of bytes transmitted in the raw
bandwidth of the MPEG channel. As with the upstream
utilization index, the calculated value represents
the most recent utilization interval.
Formula:
Downstream utilization index =
(100 * (data bytes / raw bytes))
Definitions:
Data bytes: Number of bytes transmitted as data in the
docsIfCmtsChannelUtilizationInterval.
Identical to docsIfCmtsDownChannelCtrUsed
Bytes measured over the utilization
interval.
Raw bandwidth: Total number of bytes available for
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of the downstream channel within this particular MAC
interface. If the interface is down, the object returns
the most current value. If the downstream channel ID is
unknown, this object returns a value of 0."
::= { docsIfCmtsDownChannelCounterEntry 1 }
docsIfCmtsDownChnlCtrTotalBytes OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"At the CMTS, the total number of bytes in the Payload
portion of MPEG Packets (ie. not including MPEG header
or pointer_field) transported by this downstream channel
since CMTS initialization. This is the 32 bit version of
docsIfCmtsDownChnlCtrExtTotalBytes, included to provide
back compatibility with SNMPv1 managers.
Discontinuities in the value of this counter can occur
at reinitialization of the managed system, and at other
times as indicated by the value of
ifCounterDiscontinuityTime for the associated ifIndex."
::= { docsIfCmtsDownChannelCounterEntry 2 }
docsIfCmtsDownChnlCtrUsedBytes OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"At the CMTS, the total number of DOCSIS data bytes
transported by this downstream channel since CMTS
initialization. The number of data bytes is defined as the
total number of bytes transported in DOCSIS payloads minus
the number of stuff bytes transported in DOCSIS payloads.
This is the 32 bit version of
docsIfCmtsDownChnlCtrExtUsedBytes, included to provide
back compatibility with SNMPv1 managers.
Discontinuities in the value of this counter can occur
at reinitialization of the managed system, and at other
times as indicated by the value of
ifCounterDiscontinuityTime for the associated ifIndex."
::= { docsIfCmtsDownChannelCounterEntry 3 }
docsIfCmtsDownChnlCtrExtTotalBytes OBJECT-TYPE
SYNTAX Counter64
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"At the CMTS, the total number of bytes in the Payload
portion of MPEG Packets (ie. not including MPEG header
or pointer_field) transported by this downstream channel
since CMTS initialization. This is the 64 bit version of
docsIfCmtsDownChnlCtrTotalBytes, and will not be
accessible to SNMPv1 managers.
Discontinuities in the value of this counter can occur
at reinitialization of the managed system, and at other
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times as indicated by the value of
ifCounterDiscontinuityTime for the associated ifIndex."
::= { docsIfCmtsDownChannelCounterEntry 4 }
docsIfCmtsDownChnlCtrExtUsedBytes OBJECT-TYPE
SYNTAX Counter64
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"At the CMTS, the total number of DOCSIS data bytes
transported by this downstream channel since CMTS
initialization. The number of data bytes is defined as the
total number of bytes transported in DOCSIS payloads minus
the number of stuff bytes transported in DOCSIS payloads.
This is the 64 bit version of
docsIfCmtsDownChnlCtrUsedBytes, and will not be accessible
to SNMPv1 managers.
Discontinuities in the value of this counter can occur
at reinitialization of the managed system, and at other
times as indicated by the value of
ifCounterDiscontinuityTime for the associated ifIndex."
::= { docsIfCmtsDownChannelCounterEntry 5 }
-- The following table provides operators with input data appropriate
-- for calculating upstream channel utilization, and for determining
-- the traffic characteristics of upstream channels. Operators may use
-- the docsIfCmtsChannelUtilizationTable, or perform their own polling
-- of the docsIfCmtsUpChannelCounterTable objects for utilization
-- determination.
-- The first four 32 and 64 objects in this table are mandatory.
-- Vendors may choose to implement the remaining optional objects to
-- provide operators with finer characterization of upstream channel
-- traffic patterns. The 32 bit counter objects are included to provide
-- backward compatibility with SNMPv1 managers, which cannot access 64
-- bit counter objects.
docsIfCmtsUpChannelCounterTable OBJECT-TYPE
SYNTAX SEQUENCE OF DocsIfCmtsUpChannelCounterEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"This table is implemented at the CMTS to provide upstream
channel statistics appropriate for channel utilization
calculations."
::= { docsIfCmtsObjects 11 }
docsIfCmtsUpChannelCounterEntry OBJECT-TYPE
SYNTAX DocsIfCmtsUpChannelCounterEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
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STATUS current
DESCRIPTION
"Current count, from CMTS initialization, of all minislots
defined for this upstream logical channel. This count
includes all IUCs and SIDs, even those allocated to the
NULL SID for a 2.0 logical channel which is inactive. This
is the 32 bit version of docsIfCmtsUpChnlCtrExtTotalMslots
and is included for back compatibility with SNMPv1
managers. Support for this object is mandatory.
Discontinuities in the value of this counter can occur
at reinitialization of the managed system, and at other
times as indicated by the value of
ifCounterDiscontinuityTime for the associated ifIndex."
::= { docsIfCmtsUpChannelCounterEntry 2 }
docsIfCmtsUpChnlCtrUcastGrantedMslots OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"Current count, from CMTS initialization, of unicast
granted minislots on the upstream logical channel,
regardless of burst type. Unicast granted minislots are
those in which the CMTS assigned bandwidth to any unicast
SID on the logical channel. However this object does not
include minislots for reserved IUCs, or grants to SIDs
designated as meaning 'no CM'. This is the 32 bit version
of docsIfCmtsUpChnlCtrExtUcastGrantedMslots, and is
included for back compatibility with SNMPv1 managers.
Support for this object is mandatory.
Discontinuities in the value of this counter can occur
at reinitialization of the managed system, and at other
times as indicated by the value of
ifCounterDiscontinuityTime for the associated ifIndex."
::= { docsIfCmtsUpChannelCounterEntry 3 }
docsIfCmtsUpChnlCtrTotalCntnMslots OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"Current count, from CMTS initialization, of contention
minislots defined for this upstream logical channel. This
count includes all minislots assigned to a broadcast or
multicast SID on the logical channel. This is the 32 bit
version of docsIfCmtsUpChnlCtrExtTotalCntnMslots, and is
included for back compatibility with SNMPv1 managers.
Support for this object is mandatory.
Discontinuities in the value of this counter can occur
at reinitialization of the managed system, and at other
times as indicated by the value of
ifCounterDiscontinuityTime for the associated ifIndex."
::= { docsIfCmtsUpChannelCounterEntry 4 }
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docsIfCmtsUpChnlCtrUsedCntnMslots OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"Current count, from CMTS initialization, of contention
minislots utilized on the upstream logical channel. For
contention regions, utilized minislots are those in which
the CMTS correctly received an upstream burst from any CM
on the upstream logical channel. This is the 32 bit
version of docsIfCmtsUpChnlCtrExtUsedCntnMslots, and is
included for back compatibility with SNMPv1 managers.
Support for this object is mandatory.
Discontinuities in the value of this counter can occur
at reinitialization of the managed system, and at other
times as indicated by the value of
ifCounterDiscontinuityTime for the associated ifIndex."
::= { docsIfCmtsUpChannelCounterEntry 5 }
docsIfCmtsUpChnlCtrExtTotalMslots OBJECT-TYPE
SYNTAX Counter64
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"Current count, from CMTS initialization, of all minislots
defined for this upstream logical channel. This count
includes all IUCs and SIDs, even those allocated to the
NULL SID for a 2.0 logical channel which is inactive. This
is the 64 bit version of docsIfCmtsUpChnlCtrTotalMslots,
and will not be accessible to SNMPv1 managers.
Support for this object is mandatory.
Discontinuities in the value of this counter can occur
at reinitialization of the managed system, and at other
times as indicated by the value of
ifCounterDiscontinuityTime for the associated ifIndex."
::= { docsIfCmtsUpChannelCounterEntry 6 }
docsIfCmtsUpChnlCtrExtUcastGrantedMslots OBJECT-TYPE
SYNTAX Counter64
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"Current count, from CMTS initialization, of unicast
granted minislots on the upstream logical channel,
regardless of burst type. Unicast granted minislots are
those in which the CMTS assigned bandwidth to any unicast
SID on the logical channel. However this object does not
include minislots for reserved IUCs, or grants to SIDs
designated as meaning 'no CM'. This is the 64 bit version
of docsIfCmtsUpChnlCtrUcastGrantedMslots, and will not be
accessible to SNMPv1 managers.
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Support for this object is mandatory.
Discontinuities in the value of this counter can occur
at reinitialization of the managed system, and at other
times as indicated by the value of
ifCounterDiscontinuityTime for the associated ifIndex."
::= { docsIfCmtsUpChannelCounterEntry 7 }
docsIfCmtsUpChnlCtrExtTotalCntnMslots OBJECT-TYPE
SYNTAX Counter64
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"Current count, from CMTS initialization, of contention
minislots defined for this upstream logical channel. This
count includes all minislots assigned to a broadcast or
multicast SID on the logical channel. This is the 64 bit
version of docsIfCmtsUpChnlCtrTotalCntnMslots, and will
not be accessible to SNMPv1 managers.
Support for this object is mandatory.
Discontinuities in the value of this counter can occur
at reinitialization of the managed system, and at other
times as indicated by the value of
ifCounterDiscontinuityTime for the associated ifIndex."
::= { docsIfCmtsUpChannelCounterEntry 8 }
docsIfCmtsUpChnlCtrExtUsedCntnMslots OBJECT-TYPE
SYNTAX Counter64
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"Current count, from CMTS initialization, of contention
minislots utilized on the upstream logical channel. For
contention regions, utilized minislots are those in which
the CMTS correctly received an upstream burst from any CM
on the upstream logical channel. This is the 64 bit
version of docsIfCmtsUpChnlCtrUsedCntnMslots, and will not
be accessible to SNMPv1 managers.
Support for this object is mandatory.
Discontinuities in the value of this counter can occur
at reinitialization of the managed system, and at other
times as indicated by the value of
ifCounterDiscontinuityTime for the associated ifIndex."
::= { docsIfCmtsUpChannelCounterEntry 9 }
docsIfCmtsUpChnlCtrCollCntnMslots OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"Current count, from CMTS initialization, of contention
minislots subjected to collisions on the upstream logical
channel. For contention regions, these are the minislots
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applicable to bursts that the CMTS detected, but could not
correctly receive. This is the 32 bit version of
docsIfCmtsUpChnlCtrExtCollCntnMslots, and is included for
back compatibility with SNMPv1 managers.
Discontinuities in the value of this counter can occur
at reinitialization of the managed system, and at other
times as indicated by the value of
ifCounterDiscontinuityTime for the associated ifIndex."
::= { docsIfCmtsUpChannelCounterEntry 10 }
docsIfCmtsUpChnlCtrTotalCntnReqMslots OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"Current count, from CMTS initialization, of contention
request minislots defined for this upstream logical
channel. This count includes all minislots for IUC1
assigned to a broadcast or multicast SID on the logical
channel. This is the 32 bit version of
docsIfCmtsUpChnlCtrExtTotalCntnReqMslots, and is included
for back compatibility with SNMPv1 managers.
Discontinuities in the value of this counter can occur
at reinitialization of the managed system, and at other
times as indicated by the value of
ifCounterDiscontinuityTime for the associated ifIndex."
::= { docsIfCmtsUpChannelCounterEntry 11 }
docsIfCmtsUpChnlCtrUsedCntnReqMslots OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"Current count, from CMTS initialization, of contention
request minislots utilized on this upstream logical
channel. This count includes all contention minislots for
IUC1 applicable to bursts that the CMTS correctly
received. This is the 32 bit version of
docsIfCmtsUpChnlCtrExtUsedCntnReqMslots, and is included
for back compatibility with SNMPv1 managers.
Discontinuities in the value of this counter can occur
at reinitialization of the managed system, and at other
times as indicated by the value of
ifCounterDiscontinuityTime for the associated ifIndex."
::= { docsIfCmtsUpChannelCounterEntry 12 }
docsIfCmtsUpChnlCtrCollCntnReqMslots OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"Current count, from CMTS initialization, of contention
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request minislots subjected to collisions on this upstream
logical channel. This includes all contention minislots
for IUC1 applicable to bursts that the CMTS detected, but
could not correctly receive. This is the 32 bit version of
docsIfCmtsUpChnlCtrExtCollCntnReqMslots, and is included
for back compatibility with SNMPv1 managers.
Discontinuities in the value of this counter can occur
at reinitialization of the managed system, and at other
times as indicated by the value of
ifCounterDiscontinuityTime for the associated ifIndex."
::= { docsIfCmtsUpChannelCounterEntry 13 }
docsIfCmtsUpChnlCtrTotalCntnReqDataMslots OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"Current count, from CMTS initialization, of contention
request data minislots defined for this upstream logical
channel. This count includes all minislots for IUC2
assigned to a broadcast or multicast SID on the logical
channel. This is the 32 bit version of
docsIfCmtsUpChnlCtrExtTotalCntnReqDataMslots, and is
included for back compatibility with SNMPv1 managers.
Discontinuities in the value of this counter can occur
at reinitialization of the managed system, and at other
times as indicated by the value of
ifCounterDiscontinuityTime for the associated ifIndex."
::= { docsIfCmtsUpChannelCounterEntry 14 }
docsIfCmtsUpChnlCtrUsedCntnReqDataMslots OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"Current count, from CMTS initialization, of contention
request data minislots utilized on this upstream logical
channel. This includes all contention minislots for IUC2
applicable to bursts that the CMTS correctly received.
This is the 32 bit version of
docsIfCmtsUpChnlCtrExtUsedCntnReqDataMslots, and is
included for back compatibility with SNMPv1 managers.
Discontinuities in the value of this counter can occur
at reinitialization of the managed system, and at other
times as indicated by the value of
ifCounterDiscontinuityTime for the associated ifIndex."
::= { docsIfCmtsUpChannelCounterEntry 15 }
docsIfCmtsUpChnlCtrCollCntnReqDataMslots OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
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DESCRIPTION
"Current count, from CMTS initialization, of contention
request data minislots subjected to collisions on this
upstream logical channel. This includes all contention
minislots for IUC2 applicable to bursts that the CMTS
detected, but could not correctly receive. This is the 32
bit version of
docsIfCmtsUpChnlCtrExtCollCntnReqDataMslots, and is
included for back compatibility with SNMPv1 managers.
Discontinuities in the value of this counter can occur
at reinitialization of the managed system, and at other
times as indicated by the value of
ifCounterDiscontinuityTime for the associated ifIndex."
::= { docsIfCmtsUpChannelCounterEntry 16 }
docsIfCmtsUpChnlCtrTotalCntnInitMaintMslots OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"Current count, from CMTS initialization, of contention
initial maintenance minislots defined for this upstream
logical channel. This includes all minislots for IUC3
assigned to a broadcast or multicast SID on the logical
channel. This is the 32 bit version of
docsIfCmtsUpChnlCtrExtTotalCntnInitMaintMslots,
and is included for back compatibility with SNMPv1
managers.
Discontinuities in the value of this counter can occur
at reinitialization of the managed system, and at other
times as indicated by the value of
ifCounterDiscontinuityTime for the associated ifIndex."
::= { docsIfCmtsUpChannelCounterEntry 17 }
docsIfCmtsUpChnlCtrUsedCntnInitMaintMslots OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"Current count, from CMTS initialization, of contention
initial maintenance minislots utilized on this upstream
logical channel. This includes all contention minislots
for IUC3 applicable to bursts that the CMTS correctly
received. This is the 32 bit version of
docsIfCmtsUpChnlCtrExtUsedCntnInitMaintMslots,
and is included for back compatibility with SNMPv1
managers.
Discontinuities in the value of this counter can occur
at reinitialization of the managed system, and at other
times as indicated by the value of
ifCounterDiscontinuityTime for the associated ifIndex."
::= { docsIfCmtsUpChannelCounterEntry 18 }
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docsIfCmtsUpChnlCtrCollCntnInitMaintMslots OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"Current count, from CMTS initialization, of contention
initial maintenance minislots subjected to collisions on
this upstream logical channel. This includes all
contention minislots for IUC3 applicable to bursts that
the CMTS detected, but could not correctly receive.
This is the 32 bit version of
docsIfCmtsUpChnlCtrExtCollCntnInitMaintMslots,
and is included for back compatibility with SNMPv1
managers.
Discontinuities in the value of this counter can occur
at reinitialization of the managed system, and at other
times as indicated by the value of
ifCounterDiscontinuityTime for the associated ifIndex."
::= { docsIfCmtsUpChannelCounterEntry 19 }
docsIfCmtsUpChnlCtrExtCollCntnMslots OBJECT-TYPE
SYNTAX Counter64
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"Current count, from CMTS initialization, of collision
contention minislots on the upstream logical channel.
For contention regions, these are the minislots applicable
to bursts that the CMTS detected, but could not correctly
receive. This is the 64 bit version of
docsIfCmtsUpChnlCtrCollCntnMslots, and will not be
accessible to SNMPv1 managers.
Discontinuities in the value of this counter can occur
at reinitialization of the managed system, and at other
times as indicated by the value of
ifCounterDiscontinuityTime for the associated ifIndex."
::= { docsIfCmtsUpChannelCounterEntry 20 }
docsIfCmtsUpChnlCtrExtTotalCntnReqMslots OBJECT-TYPE
SYNTAX Counter64
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"Current count, from CMTS initialization, of contention
request minislots defined for this upstream logical
channel. This count includes all minislots for IUC1
assigned to a broadcast or multicast SID on the logical
channel. This is the 64 bit version of
docsIfCmtsUpChnlCtrTotalCntnReqMslots, and will not be
accessible to SNMPv1 managers.
Discontinuities in the value of this counter can occur
at reinitialization of the managed system, and at other
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times as indicated by the value of
ifCounterDiscontinuityTime for the associated ifIndex."
::= { docsIfCmtsUpChannelCounterEntry 21 }
docsIfCmtsUpChnlCtrExtUsedCntnReqMslots OBJECT-TYPE
SYNTAX Counter64
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"Current count, from CMTS initialization, of contention
request minislots utilized on this upstream logical
channel. This count includes all contention minislots for
IUC1 applicable to bursts that the CMTS correctly
received. This is the 64 bit version of
docsIfCmtsUpChnlCtrUsedCntnReqMslots, and will not be
accessible to SNMPv1 managers.
Discontinuities in the value of this counter can occur
at reinitialization of the managed system, and at other
times as indicated by the value of
ifCounterDiscontinuityTime for the associated ifIndex."
::= { docsIfCmtsUpChannelCounterEntry 22 }
docsIfCmtsUpChnlCtrExtCollCntnReqMslots OBJECT-TYPE
SYNTAX Counter64
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"Current count, from CMTS initialization, of contention
request minislots subjected to collisions on this upstream
logical channel. This includes all contention minislots
for IUC1 applicable to bursts that the CMTS detected,
but could not correctly receive. This is the 64 bit
version of docsIfCmtsUpChnlCtrCollCntnReqMslots, and will
not be accessible to SNMPv1 managers.
Discontinuities in the value of this counter can occur
at reinitialization of the managed system, and at other
times as indicated by the value of
ifCounterDiscontinuityTime for the associated ifIndex."
::= { docsIfCmtsUpChannelCounterEntry 23 }
docsIfCmtsUpChnlCtrExtTotalCntnReqDataMslots OBJECT-TYPE
SYNTAX Counter64
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"Current count, from CMTS initialization, of contention
request data minislots defined for this upstream logical
channel. This count includes all minislots for IUC2
assigned to a broadcast or multicast SID on the logical
channel. This is the 64 bit version of
docsIfCmtsUpChnlCtrTotalCntnReqDataMslots, and will not be
accessible to SNMPv1 managers.
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Discontinuities in the value of this counter can occur
at reinitialization of the managed system, and at other
times as indicated by the value of
ifCounterDiscontinuityTime for the associated ifIndex."
::= { docsIfCmtsUpChannelCounterEntry 24 }
docsIfCmtsUpChnlCtrExtUsedCntnReqDataMslots OBJECT-TYPE
SYNTAX Counter64
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"Current count, from CMTS initialization, of contention
request data minislots utilized on this upstream logical
channel. This includes all contention minislots for IUC2
applicable to bursts that the CMTS correctly received.
This is the 64 bit version of
docsIfCmtsUpChnlCtrUsedCntnReqDataMslots, and will not be
accessible to SNMPv1 managers.
Discontinuities in the value of this counter can occur
at reinitialization of the managed system, and at other
times as indicated by the value of
ifCounterDiscontinuityTime for the associated ifIndex."
::= { docsIfCmtsUpChannelCounterEntry 25 }
docsIfCmtsUpChnlCtrExtCollCntnReqDataMslots OBJECT-TYPE
SYNTAX Counter64
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"Current count, from CMTS initialization, of contention
request data minislots subjected to collisions on this
upstream logical channel. This includes all contention
minislots for IUC2 applicable to bursts that the CMTS
detected, but could not correctly receive. This is the
64 bit version of
docsIfCmtsUpChnlCtrCollCntnReqDataMslots,
and will not be accessible to SNMPv1 managers.
Discontinuities in the value of this counter can occur
at reinitialization of the managed system, and at other
times as indicated by the value of
ifCounterDiscontinuityTime for the associated ifIndex."
::= { docsIfCmtsUpChannelCounterEntry 26 }
docsIfCmtsUpChnlCtrExtTotalCntnInitMaintMslots OBJECT-TYPE
SYNTAX Counter64
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"Current count, from CMTS initialization, of initial
maintenance minislots defined for this upstream logical
channel. This count includes all minislots for IUC3
assigned to a broadcast or multicast SID on the logical
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channel. This is the 64 bit version of
docsIfCmtsUpChnlCtrTotalCntnInitMaintMslots,
and will not be accessible to SNMPv1 managers.
Discontinuities in the value of this counter can occur
at reinitialization of the managed system, and at other
times as indicated by the value of
ifCounterDiscontinuityTime for the associated ifIndex."
::= { docsIfCmtsUpChannelCounterEntry 27 }
docsIfCmtsUpChnlCtrExtUsedCntnInitMaintMslots OBJECT-TYPE
SYNTAX Counter64
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"Current count, from CMTS initialization, of initial
maintenance minislots utilized on this upstream logical
channel. This includes all contention minislots for IUC3
applicable to bursts that the CMTS correctly received.
This is the 64 bit version of
docsIfCmtsUpChnlCtrUsedCntnInitMaintMslots,
and will not be accessible to SNMPv1 managers.
Discontinuities in the value of this counter can occur
at reinitialization of the managed system, and at other
times as indicated by the value of
ifCounterDiscontinuityTime for the associated ifIndex."
::= { docsIfCmtsUpChannelCounterEntry 28 }
docsIfCmtsUpChnlCtrExtCollCntnInitMaintMslots OBJECT-TYPE
SYNTAX Counter64
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"Current count, from CMTS initialization, of contention
initial maintenance minislots subjected to collisions on
this upstream logical channel. This includes all
contention minislots for IUC3 applicable to bursts that
the CMTS detected, but could not correctly receive.
This is the 64 bit version of
docsIfCmtsUpChnlCtrCollCntnInitMaintMslots, and will not
be accessible to SNMPv1 managers.
Discontinuities in the value of this counter can occur
at reinitialization of the managed system, and at other
times as indicated by the value of
ifCounterDiscontinuityTime for the associated ifIndex."
::= { docsIfCmtsUpChannelCounterEntry 29 }
--
-- notification group is for future extension.
--
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docsIfCmtsUpChnlCtrExtCollCntnReqMslots,
docsIfCmtsUpChnlCtrExtTotalCntnReqDataMslots,
docsIfCmtsUpChnlCtrExtUsedCntnReqDataMslots,
docsIfCmtsUpChnlCtrExtCollCntnReqDataMslots,
docsIfCmtsUpChnlCtrExtTotalCntnInitMaintMslots,
docsIfCmtsUpChnlCtrExtUsedCntnInitMaintMslots,
docsIfCmtsUpChnlCtrExtCollCntnInitMaintMslots
}
STATUS current
DESCRIPTION
"Group of objects implemented optionaly in Cable Modem
Termination Systems."
::= { docsIfGroupsV2 4 }
END
5. Acknowledgments
This document is a production of the Docsis 2.0 OSS Working Group.
It is a revision based on RFC2670, "Radio Frequency (RF)
Interface Management Information Base for DOCSIS compliant RF
interfaces" [RFC2670].
The current editor wishes to express gratitude to Rich Prodan, Aviv
Goren, Greg Nakanishi, Rich Woundy, Eduardo Cardona, and Adi Shaliv
for their valued advice and opinions.
The current editor is also very grateful to colleague Andr Lejeune
for his timely and intelligent advice and assistance.
6. Revision History6.1. Scope
This MIB in this document has been developed to accommodate
DOCSIS 2.0 devices and their system capabilities. The MIB is an
update to RFC2670 with the additional incorporation of EuroDocsis
specific items and the DOCS_IF_EXT mib.
6.2. Extension
We have maintained the MIB objects as defined in RFC 2670. In some
cases new mib objects have been created with identical
functionality but greater capacity (ie 32 to 64 bits). In these
situations, both the original 32 bit objects and the new 64 bit
objects must be implemented.
7. Normative References
[RFC2119] Bradner, S., "Key words for use in RFCs to Indicate
Requirement Levels", BCP 14, RFC 2119, March 1997.
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This MIB relates to a system which will provide metropolitan public
internet access. As such, improper manipulation of the objects
represented by this MIB may result in denial of service to a large
number of end-users. In addition, manipulation of the
docsIfCmServiceQosProfile, docsIfCmtsServiceQosProfile, and the
elements of docsIfQosProfileTable and docsIfCmtsModulationTable may
allow an end-user to improve their service response or diminish
other subscriber's service response.
There are a number of management objects defined in this MIB that
have a MAX-ACCESS clause of read-write or read-create. Such
objects may be considered sensitive or vulnerable in some network
environments. The support for SET operations in a non-secure
environment without proper protection can have a negative effect on
network operations.
SNMPv1 by itself is not a secure environment. Even if the network
itself is secure (for example by using IPSec), even then, there is
no control as to who on the secure network is allowed to access and
GET/SET (read/change/create/delete) the objects in this MIB.
It is recommended that the implementers consider the security
features as provided by the SNMPv3 framework. Specifically, the
use of the User-based Security Model RFC 3414 [12] and the View-
based Access Control Model RFC 3415 [15] is recommended.
It is then a customer/user responsibility to ensure that the SNMP
entity giving access to an instance of this MIB, is properly
configured to give access to the objects only to those principals
(users) that have legitimate rights to indeed GET or SET
(change/create/delete) them.
10. Changes from RFC2670
Upstream now separated into 'physical interfaces' and 'logical
channels'. An instance of the docsIfUpstreamChannelTable exists
for each 'logical channel'. The IANA ifType for 'logical channels'
is 205. The IANA ifType for 'physical interfaces' remains at 129.
Object docsIfDownChannelAnnex added to
docsIfDownstreamChannelTable. This object originated in the
EuroDocsis specifications.
Nine new objects added to the docsIfUpstreamChannelTable. One
describes the channel type in use. Four are specific S-CDMA
parameters. Three are used in the creation of a temporary
inactive upstream row so the S-CDMA parameters may be manipulated
'offline'. One object has been added to enable/disable
pre-equalization on the upstream channel.
Object docsIfQosProfMaxTransmitBurst has been added to the
docsIfQosProfileTable to replace deprecated object
docsIfQosProfMaxTxBurst. This fixes a range error caused by switch
to recording as bytes instead of minislots.
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Three new 64 bit counters added to the docsIfSignalQualityTable to
extend the capacity of existing 32 bit counters.
A new base object docsIfDocsisBaseCapability has been added which
mirrors the functionality of the docsifExt mib object
docsIfDocsisCapability, extended to include Docsis 2.0.
Three new objects added to the docsIfCmStatusTable. One indicates
the current modulation type. The second mirrors the functionality
of the docsIfExt object docsIfDocsisOperMode, while clarifying that
it applies to the COS/QOS mode used by the device. The third new
object indicates equalization data at the CM.
Two new 64 bit counters added to the docsIfCmServiceTable to extend
the capacity of existing 32 bit counters.
Seven new objects added to the docsIfCmtsCmStatusTable. Three are
64 bit counters, two add ipv6 capability, and one indicates the CM
modulation type in use. The remaining object mirrors the
functionality of the docsIfExt object docsIfCmtsCmStatusDocsisMode,
while clarifying that it applies to the COS/QOS mode used by the
device.
One object added to the docsIfCmtsServiceTable to fix a range error
in an existing object, that has been deprecated.
Eight new objects added to the docsIfCmtsModulationTable. Seven of
these describe ATDMA/S-CDMA channel parameters, while the other
describes modulation attributes common to all modulation types.
One new object and three new tables added to provide CMTS upstream
and downstream channel utilization data.
Enumerated values for object docsIfDownChannelInterleave have been
expanded to include a EuroDocsis value.
Enumerated values for object docsIfCmtsModIntervalUsageCode have
been expanded to include new Docsis 2.0 values.
Enumerated values for object docsIfCmtsModType have been expanded
to include new Docsis 2.0 values.
Compliance statements have been updated to reflect new objects and
to describe EuroDocsis specific implementation features.
The descriptions of objects docsIfCmtsStatusInvalidRegReqs and
docsIfCmtsStatusFailedRegReqs have been clarified.
Separated references into normative and informative.
11. Management Interoperability of DOCSIS 1.0, 1.1 and 2.0
The MIB module contained in this document updates RFC 2670, primarly
to handle the requirements of DOCSIS 2.0 [4] as described in the
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requirements for DOCSIS 1.0 and DOCSIS 1.1.
For DOCSIS 1.1, [3] and adopted for DOCSIS 2.0 by [4], define a
different service queuing mechanism known as QOS (ie see SNMP
management module requirements for DOCSIS 2.0 in [5]).
The management requirements of COS associated to RFC 2670 and
this document are the tables docsIfQosProfileTable,
docsIfCmServiceTable and docsIfCmtsServiceTable and the specifics
CM/CMTS support for DOCSIS 1.0, 1.1 and 2.0 are defined in their
pParticular management specifications and MIB requirements associated
to [2], [3] and [4] respectively and out of scope of this document.
12. Intellectual Property
The IETF takes no position regarding the validity or scope of any
intellectual property or other rights that might be claimed to
pertain to the implementation or use of the technology described in
this document or the extent to which any license under such rights
might or might not be available; neither does it represent that it
has made any effort to identify any such rights. Information on the
IETF's procedures with respect to rights in standards-track and
standards-related documentation can be found in BCP-11. Copies of
claims of rights made available for publication and any assurances
of licenses to be made available, or the result of an attempt made
to obtain a general license or permission for the use of such
proprietary rights by implementers or users of this specification
can be obtained from the IETF Secretariat.
The IETF invites any interested party to bring to its attention any
copyrights, patents or patent applications, or other proprietary
rights that may cover technology that may be required to practice
this standard. Please address the information to the IETF Executive
Director.
13. Author's Address
David Raftus
Terayon Canada Ltd
340 Terry Fox Drive, Suite 202
Ottawa Ontario
Canada
Phone: +1 613 592 1052 ext 222
E-mail: david.raftus@terayon.com
14. Full Copyright Statement
Copyright (C) The Internet Society (2003). All Rights Reserved.
This document and translations of it may be copied and furnished to
others, and derivative works that comment on or otherwise explain it
or assist in its implementation may be prepared, copied, published
and distributed, in whole or in part, without restriction of any
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Internet Draft DOCSIS RF Interface MIB October 2003
kind, provided that the above copyright notice and this paragraph
are included on all such copies and derivative works. However, this
document itself may not be modified in any way, such as by removing
the copyright notice or references to the Internet Society or other
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The limited permissions granted above are perpetual and will not be
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This document and the information contained herein is provided on an
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Funding for the RFC Editor function is currently provided by the
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